O’Breen, Fergus. Fergus O’Breen was created by “Anthony Boucher,” aka William Anthony Parker White, and appeared in four novels, starting in 1939 with The Case of the Crumpled Knee. While O’Breen is a private eye and owns his own agency in Los Angeles, he’s anything but hard-boiled. He’s more a collection of idiosyncrasies: he paces, he's cocksure, he wears loud, bad clothing, he knows dozens of dirty limericks, when he sneezes he sneezes exactly seven times, and he describes himself as an “introspective extrovert with manic-depressive tendencies.” (Whatever) He is successful, but who cares?

Ocean Wireless Boys. The Boys (haven't found their names yet, sorry) were created by John H. Goldfrap and appeared in the six volume "Ocean Wireless Boys Series" running from 1914 to 1917 and beginning with The Ocean Wireless Boys on the Atlantic. The Boys worked the radio for various ships in peacetime and war, finding lost liners, working on the "iceberg patrol" (this in the wake of the Titanic sinking, obviously), and fighting the Hun on the high seas.

Octopus. One of the more outré of the pulp characters—and given the genre, that’s quite saying something, believe me—the Octopus was actually the villain of the piece in his single issue, The Octopus v1 #4, 1939, written by...well, it's not exactly clear. It might be Norvel Page, or it might be Ejler and Edith Jacobsen. A rather over-the-top mad scientist, the Octopus worked from a big city hospital and plotted world conquest. His appearance might explain his desire to dominate the world; he's sea-green, with four "suction-cupped weaving tentacles" set above "hideously malformed" legs. He wears a small mask, and behind it can be seen two enormous, luminous, purple eyes. He was the leader of the Purple Eyes, a cult bent on world domination and mass destruction. The Octopus’ chosen method was an "ultra-violet ray" which devolved men and women and turned them into deformed, life-hating monsters hungry for human flesh and glowing with “ultraviolet purple.” Against the Octopus was set Jeffrey Fairchild, a young millionaire philanthropist (he eventually stopped the Octopus, of course). He had three identities. The first was Jeffrey Fairchild, hospital administrator. The second was was kindly Dr. Skull, the old man who made a practice of helping the poor in the slums. (His good works didn’t help him when everyone thought that he was the Octopus, however) In his other identity he was the “Skull Killer,” who fought crime and left a skull-imprint, ala the Spider, on his enemies. Fairchild was assisted by Carol Endicott, Dr. Skull’s nurse. See also the Scorpion entry.

Officer 444. Frank Grey, Officer 444 was created by Francis Ford and appeared in the 10-chapter serial Officer 444 (1926). In the film a professor creates a gas more deadly than any other in existence. However, he knows that if word gets out about this powers inimical to the United States will want to use it against the U.S., so he tries to keep it a secret, telling the formula only to his nurse, Gloria Grey. She in turn tells it to her son, Frank (aka Officer 444). However, the leader of an international gang of thieves, the Frog, finds out about the gas, and kills the professor. The Frog and his gun moll, the Vulture, try for Gloria, but she passes the formula to the gas, in code, to Frank, leading to ten chapters of chases through the New York sewers, shootouts in secret passageways and labs, and the like. Eventually Frank, with a lot of backup from the NYPD, takes down the Vulture-Frog and saves the day.

Og. Og was created by Irving Crump and debuted in Og - Son of Fire (1922) and appeared in three novels and a radio serial. Og was a missing link, a Neanderthal who began humbly, as just another warrior tribesman, but whose superior brain and moral faculties enabled him to become an inventor, a governor, and (get this) an agrarian reformer, teaching his fellow Neanderthals how to plant and harvest. Og, his girlfriend Nad, and his father Ru lived and adventured among dinosaurs (It's the pulps--don't ask, just accept) and had a number of vigorous battles with other tribesman and with sabretooth tigers, woolly rhinoceri, and the like.

Og, Son of Fire
The image of a Big Little book version of Og, Son of Fire.

O'Hara, Ken. Ken O'Hara was created by Herbert H. Stinson and appeared in Black Mask from 1933 to 1947. O'Hara was a reporter for the Los Angeles Tribune; he was big, with a big mouth and fists to back it up. He often followed stories far enough to catch the criminals who'd committed the crimes, in much the same way that pulp reporters always did.

Okewood, Douglas. Douglas Okewood was created by Valentine Williams and appeared in the nine book Clubfoot series, which began with The Man With the Clubfoot (1918) and ended with Courier to Marrakesh (1944). Okewood is the nominal hero of the series; he's a WW1 vet who was retired from the trenches after being wounded on the Somme ("gunshot wound in head and cerebral concussion" as well as shellshock). He gets drawn into espionage because his brother Francis has disappeared and so he, Douglas, has to go into Europe and behind enemy lines to rescue him. From there it's a long series of jousts with much the more interesting character of the series, Clubfoot, aka Dr. Adolph Grundt, who repeatedly survives what seems like a certain death to return and plague the Allies. He's big, ugly, a stereotypical Prussian, quite ruthless, and responsible for countless infamies and wrecked lives. In other words, he's far more attractive to the modern reader than the rather limp and colorless Okewood.

Okukenu, Sadipe. Sadipe Okukenu was created by John Bruce and appeared in stories in McGirt’s Reader from 1907 to 1909. Sadipe was a private eye working for a detective agency, and an African-American—this, in 1907! In his one recorded case he traces a stolen diamond from America to England and then back to Africa.

Old Faithful. Old Faithful was created by Raymond Z. Gallun and appeared in three stories in Astounding Stories, beginning with "Old Faithful," Astounding Stories, December 1934. "Old Faithful" is actually 774, a Martian. 774's culture is a very regimented one, with limited resources, and individual Martians are given limited lifespans, with extensions given only when the individual's work will benefit Martian culture as a whole. 774's superiors don't feel that 774's work, which in this case is a decade-long communication with Earth, helps Mars, so they don't grant 774 a life extension. So 774 hitches a ride on a comet, crashlands it on Earth, and dies, establishing that travel between the two planets is possible. The later stories involve 774's son, 775, and the Earth's and Mars' colonization of the rest of the solar system.

Old Priest. The Old Priest (no other name is given to him) was created by Robert H. Benson and appeared in various short stories collected in The Light Invisible (1903). The Old Priest, somewhat like Father Pater, receives telepathic messages and visions from G-d. The Old Priest, though, differs from Father Pater in that his messages are not so clear-cut and are more often visions than mental commands. Oh, and the stories aren't so insufferable or overwhelmed by Catholic propaganda. Once the Old Priest sees an image of Jesus in the wilderness. When the Old Priest (as a young teenager) kills a thrush, he sees Satan (who is described as resembling Patrick Stewart, of all things) (you think I'm joking, but I'm not--bald, smiling, sloping forehead, etc) smiling with glee at the dead body. When the Old Priest (again, as a teenager) wanders into the forest at night, he sees a vision of "gypsy" Pagans (just don't ask) celebrating the Viking blood eagle ritual. And when the Old Priest dies, he sees Jesus.

Old Windmills. Created by Ruth Aughiltree, "Old Windmills" appeared in Detective Story Magazine in 1925. William "Old Windmills" Clayton lives in a small town in the countryside outside of Boston (in Arkham, perhaps?) and earns a living from selling small wooden windmills which he carves. Old Windmills is actually an ex-con who did 15 for gadget-making, but in his quite countryside he takes on very mild crimes, like con men and counterfeiting. He is assisted by a cute widdle kitten named "Robert E. Lee."

O'Leary, Terence X. Terence X. O'Leary was created by Arthur "the Ed Wood of his era" Empey and debuted in "Under Three Flags" in War Stories in December 1926. Through 1936 he appeared in War Stories, Battle Stories, War Stories again, War Birds, Terence X. O'Leary's War Birds, and then War Birds and Battle Stories again. O'Leary is an interesting character who evolves over time. He begins as an Irish stereotype, the red-headed drunken liar and braggart, all fist and no brain, hating the English and everything that stereotype says he should hate. This O'Leary is active during WW1 but a blunderer, succeeding in the infantry more through luck than anything else.

Later O'Leary shapes up, becoming a very competent and fearless action hero, his limitations gone. He moves to the "Rainbow Division," in which he sees some action, gets recommended for the DSC, and becomes famous.

Then he became a sergeant of the Military Police, having had several enlistments in the cavalry. He is suddenly an expert with guns, cited for the Medal of Honor and fluent in German, "having been adopted by a German couple in his youth." (Empey altered O'Leary's past and present as he saw fit) O'Leary repeatedly tries to leave the M.P. by getting into action, which he sees quite a lot of, on the front lines and behind enemy lines, even into Switzerland. He discovers that he has a double--a German spy, only without the red hair. He and the Secret Service make use of this to help plant O'Leary at German hq. He also wields a group of military convicts into a tough fighting unit, helped tanks crush German pillboxes, and, well, the usual WW1 exploits. Much later he trained Ethiopians to fight against the Italians; his devoted, adoring troops called him “the Green Lion of Judah,” and he had good success against Mussolini’s troops.

And that was it for his pre-WW2 adventures. But he wasn’t done yet. There were still the air war stories ahead of him.

Some months later (real time) it's revealed that O'Leary had not only been in the U.S. Cavalry (four terms of service) but also in the French Foreign Legion and in the Escadrille Lafayette. He was suddenly an ace pilot, in command of the 411th (or 417th) Squadron, the "Black Wings Pursuit" Squadron. The men in the Squadron are outlaws, destined to life sentences unless they fight hard. Actually, Captain Wilkey is nominally in charge of the group, but its real leader is O'Leary, ably assisted by Mike Rafferty, his best pal. In these stories O'Leary, his plane Lulu Belle, and his men are opposed by notable individual villains. The first is Baron von Stilzer, the Green Falcon, the leader of the Green Circus pilots, a nasty German and stereotype of the Prussians. The second is Baron Heinrich von Stilzer, the Black Eagle, the first Baron's brother and twice as bad as the original, as are his men, the pilots of the Black Circus. The third is Count Joseph von Krassner, the Black Roc, a vicious Prussian: "Germany's most noted war scientist...responsible for poison gas, liquid fire, and the rest of the hellish inventions." One of his inventions, an airplane full of explosives (an early version of a V1 rocket), kills most of the Black Wings Pursuit Squadron. After various adventures there comes Baron Kofrank von Stoeffen, London-based head of German espionage. He uses the Scarlet Death, a lethal poison, to kill Captain Wilkey. There's more bloodshed, and O'Leary kills the enemy's Crimson Legion, as he killed all the preceding villains.

Then we jump ahead sixteen years, to 1935, where Captain O'Leary and Captain McGuffy are USAF pilots. Unuk, the High Priest of the God of the Depths, is a 500-year-old immortal, quite insane, of course, and living, with his brilliant Under Priest Alok, on the Pacific island of Lataki. There they use "chemical mind control" to dominate a group of captured scientists, all of whom create wonderful and highly advanced weapons for Unuk. Unuk intends to destroy the U.S.A. and England and to take over the world. O'Leary, of course, is the only one who can effectively oppose him, and he does. When kidnaped and taken to Latakia, he steals Unuk's massive air ship, flies to the US, and shoots down what's left of Unuk's fleet of missiles. Much of the US has been destroyed, but much more saved. When Unuk's armada of airships, armed with "death rays," tries to attack America, O'Leary shoots them down after a number of ferocious air battles. O'Leary manages to kill Unuk and Alok, but then Umgoop the Horrible, High Priest of the sub-aquatic kingdom of Neptunia, teams up with the High Priestess, Satania, and "reconstructs" Unuk and Alok, unleashing them and all the dread forces of Neptunia on America and Ireland. After one hell of a lot of killing--even O'Leary and McGuffy buy it, but they get reconstructed as well--Umgoop, Satania, Unuk and Alok got down to a flaming death, and with that the O'Leary series ends. (There's one more story, but it's set during WW1)

O'Leary's companions and friends are Sergeants Angus MacQuarrie of the Black Watch and Sergeant Elkins of the Cold Stream Guards, Scots and Irish stereotypes.

Terence X. O'Leary's War Birds
A decent short summary of the character. From the Secret Headquarters site.

Omar, the Mystic. Omar appeared in an eponymous radio serial from 1935 to 1936. Omar was a secondary character on "Chandu the Magician," a fellow mystic who had learned the "secrets of the East" from the same yogi who had taught Chandu. Omar was helped in his war on evil by the lovely Zaidda.

O'Neil, Lady Nora. Lady Nora O'Neil was created by Clive Stewart and appeared in Scarlet Adventuress in 1936. Lady Nora is an Irish "fighter for liberty," using whatever weapons were available to help the IRA and do in the Brits. These weapons sometimes were guns; she had a pistol holstered in the top of her silk stockings. Sometimes one of the weapons was sex; in one story she was willing to sleep with an English Colonel to get the information she wants from him. (She also sleeps with her Irish lover, but that's love, not sex) Lady Nora is hard, though passionate about her cause.

O'Neil, Scarlet. Invisible Scarlet O'Neil was created by Russell Stamm and debuted on 3 June 1940 and ran through 1956. Scarlet O'Neil was a reaction to the growing popularity of comic book superheroes, and was one of the first superheroes created specifically for comic strips. Scarlet, a beautiful redhead, was the daughter of Dr. O'Neil, a scientist who was experimenting on creating various weapons for America. Scarlet accidentally stuck her finger in front of a "weird-looking ray." This gave Scarlet the ability to make herself invisible at will by pressing a nerve on her left wrist. Scarlet decided to use her new power to help America and to do good for people. And so she did, passing up romance on numerous occasions to fight Japanese and German spies, saboteurs, gangsters, and other dobadders.

O'Neill. See the Six-Gun Gorilla entry.

Operator #5. One of the most memorable of the pulp characters, Operator #5 debuted in "The Masked Invasion" in Operator #5 #1, April 1934, written by Frederick Davis. He was James "Jimmy" Christopher, Secret Service Operator #5 and a man of almost superhuman abilities, Bond before Fleming put pen to paper. Operator #5 was never given any background, so far as I knew. He was simply Operator #5--and that was enough.

His job was to guard the U.S. and to fight against the enemies that would bring the United States down. He was aided in this by a number of people. Tim Donovan was a young shoeshine boy who, long before "The Masked Invasion," had saved Jimmy's life (a little matter of a gangster with a gun). In return Jimmy informally adopted him, making him Jimmy's assistant, and when Tim grew up he entered the Service just like his adoptive father. Diana Elliot (later "Elliott"), a reporter for the Amalgamated Press, was Jimmy's girlfriend (and frequently the Woman Who Must Be Rescued figure); during the Purple Invasion she became an agent for the Service. Z-7, a grim, stocky man, was the head of the Service; he began as Jimmy's boss and friend but was eventually replaced by Jimmy. Jimmy's father, John, was a former Service Operator himself; he'd been very effective as Operator Q-6, but he'd taken a bullet near the heart which forced him to retire and kept him from active duty. (He still managed to help Jimmy out on occasion, dying in action in some novels but returning without explanation in later books) Jimmy's twin sister Nan also was of assistance to Jimmy. Of the most use to Jimmy, however, were the Hidden Hundred, a group of 100 men who'd been members of the Secret Service until a stupid Secretary of State had dismissed them. The Hundred continued to fight for America, however, and Jimmy was their head.

The Operator #5 stories were all about invasions, from within or without. The United States was constantly in peril, and often it was only Jimmy who could stop it. The invaders used any number of tactics and weapons: destroy the food supply, steal the gold reserves, "green death mists," rockets, the "flaming death," the atomic bomb, etc. The Purple Empire stories were about an invasion of America by the dictator Rudolph I of "Balkaria" and his armies. Jimmy helped lead the resistance, and America triumphed, but only after Canada and Mexico were left under "vandal rule" and much of the U.S. was rubble. Worse still was the Yellow Vulture sequence, in which an invasion from Japan threatened to crush what was left of the United States. Operator #5 was canceled with the Yellow Vulture, the Japanese warlord Moto Taronago, not yet defeated. Taken as a whole the Operator #5 stories constitute the greatest epic of the pulp age, on a scale few other pulps attempted. (Can you tell I'm a fan?)

Jimmy, lean and hard, was in his early twenties, with a strong, clean-cut face and bright blue eyes. The only real distinguishing mark on his body was a scar on his right hand in the shape of a "spread winged American eagle. Its wings seemed to flex, as though straining to take flight, as the young man's fingers moved." He was of course adroit with knife and gun, and very very (very) tough in a fight. He had a few secret weapons: a skull ring which had the number 5 engraved on it and which had an explosive tip; a gold skull ornament which held within it a reservoir of Diphenolchlorasine, a poison gas; and a rapier hidden within his belt. In his personal life he is assisted by his very capable manservant Crowe.

Operator 5
Short on information, but you can buy e-texts of the original pulps from here. Part of the Vintage Library site.

Secret Service Operator #5
A good overview of Jimmy Christopher. From the Hero Pulps! site.

O'Reilly, Terrence. Patrolman Terrence O'Reilly, aka "O'Reilly Sahib," was created by Lawrence Blochman and appeared in Argosy (among other places) beginning in 1936 with "O'Reilly Sahib." O'Reilly is a towering, rough-and-tough (but good-natured) NYPD patrolman who is assigned to bodyguard Prince Vinayak Rao Bahadur ("You may call me Vinnie"). To the surprise of both, a fast friendship develops, and when the Prince's father, the Maharajah of Zarapore, dies, O'Reilly goes to India with Vinnie and acts as his confidante, bodyguard, and friend. The O'Reilly Sahib stories are surprisingly entertaining and good-humored, and while the India depicted in them is hardly realistic Blochman doesn't treat it with much prejudice, either.

O'Rourke, Colonel Terence. Colonel Terence O'Rourke was created by Louis Vance, author of the Lone Wolf stories, and appeared in The Popular Magazine from 1903 through 1907, with a collection being published in 1905, Terence O'Rourke, Gentleman Adventurer. O'Rourke, a strapping Irish lad, decides that freebooting and hiring out as a mercenary is the best way to make his fortune in the world, and so he does, accompanied by his valet Danny, a red-headed Irishman. O'Rourke is, of course, tall and muscular, "lean at the flag, trim of leg," handsome, with blue-grey eyes and a laughing smile. He's an experienced, excellent sword for hire, with an honorable discharge from the French Foreign Legion, a sword won in Cuba, a Captain's commission from Greece, and a jewel-encrusted watch courtesy of the president of a nameless South American republic. He is almost superhumanly strong and resilient, able to take enormous amounts of punishment and muddle through because of his exceptional willpower. Likewise, his swordsmanship, martial ability, and accuracy with a gun are among the best imaginable. Quite a piece of work all around, our Terence.

He begins as a penniless soldier of fortune, who by chance runs into a beautiful French noblewoman, Madame la Princesse Beatrix de Grandlieu. She is in need of help, because her brother has been duped into helping mount an expedition to the North Coast of Africa, to set up the "Empire of the Sahara." Beatrix would be married (against her will) to the Emperor, and the only one who she can rely upon is an old family friend--who Terence has just beaten for an insult. Terence is hired by Beatrix, and off he goes, along with several dozen other mercenaries, to the Sahara. It ends badly, with the native Tawareks, the "pirates of the sands," slaughtering everyone except the main characters. Terence helps get Beatrix and the others back to France, and Beatrix and Terence acknowledge they are in love with each other. But though she's willing to leave her wealth and life of privilege for him, he'll have none of it. Instead, he departs for more adventure, to earn enough money to be worthy of her at last.

Terence goes to the flyspeck European operetta country of Lutzelburg to rescue the child heir to the throne, killing the usurper who kidnaped the child in a rapier duel. Terence goes to Cairo and stops a plot against the British there. Terence goes to Tangiers and foils a blackmail scheme. Terence goes to India and helps a friend. And, finally, Terence returns to Ireland to claim his ancestral castle, but then is forced to leg it across Europe after the kidnaped Beatrix, finally rescuing her and driving away to Live Happily Ever After.

O'Rourke, Patrick. See the Angus Campbell entry.

Orsen, Neils. Neils Orsen was created by Dennis Wheatley and appeared in various short stories in the 1930s and 1940s. These were collected in Gunmen, Gallants and Ghosts (1943). Orsen is a psychic, although whether he does what he does for pay or simply to help the cause of good seems somewhat unresolved. He's got a substantial private income, so he doesn't really need any money. The Orsen stories are an interesting combination of the purely scientific, "these monsters are merely vibrations!" occult detective stories (ala Dr. Muncing) and the more sorcerous/psychically-powered occult detectives (ala Dr. Silence and Luna Bartendale). Orsen carries a gun and uses it when necessary, but he also possesses several powerful talismans and knows several rituals and incantations (never described, alas) for dealing with "Abhumans" and evil ghosts and the like. He's a Sensitive; that is, he can detect psychic "vibrations," even from the long-dead. Several of his enemies actually are ordinary criminals, and half of the crimes he's called in to investigate end up being hoaxes, normal crimes gussied up to look like occult doin's. Orsen is active in America and in England, and during 1940 is active in France against an evil German. (He's neutral, like his country, but is against evil, which includes some Germans at that point.)

Orsen is Watsoned by Bruce Hemmingway, his friend and lawyer (offices in London, Paris and New York).  Orsen, a Swede who seems remarkably American in most ways, is "a frail little man with a big domed head and enormous pale-blue eyes like those of a Siamese cat." He's the "seventh child of a seventh child," which of course explains his psychic Sensitivity. He actually has a cat, Past, who is intelligent, psychically Sensitive, and can understand Orsen's words as well as obey his commands.

Osborn, Ralph. Ralph Osborn was created by Lt. Commander Edward L. Beach and appeared in the four-book "United States Naval Series," which ran from 1909 to 1912 and began with Ralph Osborn - Midshipman at Annapolis. A Story of Life at the U. S. Naval Academy. Ralph worked his way up from being a lowly Middie at Annapolis to working as an ensign in a battleship's engine room to becoming a Lieutenant and commanding a torpedo boat destroyer off the West Indies.

Oscar. Oscar was created by James Norman and appeared in Fantastic Adventures beginning with "Oscar, Detective of Mars" (October 1940). Quoting from Sam Moskowitz, with thanks to Ronald Byrd for sending this along:

An alien sleuth appears in "Oscar, Detective of Mars" by James Norman, which was published in Fantastic Adventures for October 1940. Inexplicably brought to earth by the conjuring of Hodar, a stage magician, is a Martian four-feet-five-inches tall, with a feathered bottom and a humanlike face except for a tulip-shaped nose. It is this last characteristic which makes him so effective at detection, because Martians converse by odor, and Oscar can read the odors of everyone he meets and the places he visits. Another powerful advantage is a skin so tough that bullets bounce off it. In the first story, he uncovers a plot by an industrialist to take over the country with the aid of a fear serum, and pins a murder on the man in the process.

In the follow-up story, "Death Walks in Washington" (Fantastic Adventures, March 1941), he solves the death of a Senator, killing a raft of zombies with silver bullets in the process. There were three other stories, all in Fantastic Adventures: "Oscar Saves the Union" (September 1941), "Oscar and the Talking Totem" (April 1942), and "Double Trouble for Oscar" (October 1942). The stories were extremely lightweight, tongue-in-cheek entertainment, but the series was a better amalgamation of the detective story and science fiction than most.

Osterman, Alsop. Alsop Osterman, along with his nemesis Algy Brett, was created by Muriel Pollexfen and appeared in a series of six stories in  Adventure in 1911; the stories were collected in The Grey Ghost (1910). Osterman is not the hero of the piece, but I find him more interesting than Algy, who is a generic hero of the Stump Beefknob stripe. Osterman is a brilliant inventor of unknown background; to Americans and British he seems English, although it is eventually revealed that he's a German (the cad!) out to help Germany defeat the British. To do this he's built the Gray Ghost, a wonder aircraft, over a hundred feet long with flapping wings and propellers and armed with a ram capable of sinking an ocean liner. Osterman begins a reign of terror from the sky, sinking ships and dropping bombs on them. Unfortunately, Algy Brett, a daring young clerk in the British War Office, finds out about Osterman, and pursues him through several stories, until finally Osterman, on the verge of building a fleet of airships for "Emperor Maximilian" to use against the U.K., is killed by a disgruntled former employee.

Ott, Poppy. Poppy Ott was created by Edward Edson Lee and debuted in Jerry Todd and the Talking Frog (1925) before moving over to his own series, beginning with Poppy Ott and the Stuttering Parrot (1926) and lasting for 11 novels, through 1939. Ott's full name was Nicholas Carter Sherlock Holmes Ott; his father was a would-be private detective and fan of mysteries. Ott, who looked like Huckleberry Finn, came to Jerry Todd's Tutter, Illinois and took over leadership of the gang, leading it on various adventures, primarily humorous mysteries.

Outboard Boys. The Boys (don't know their names yet, sorry) were created by Roger Garis (not Howard) and appeared in the four-book "Outboard Boys Series," which ran from 1933 to 1934 and began with The Outboard Boys at Mystery Island, or, Solving the secret of the Hidden Cove. The Boys used their powerful outboard motors to solve mysteries and have adventures, etc.

Outdoor Chums. The Chums (don't know their names yet, sorry) were created by "Captain Quincy Allen" (St. George Rathbone working under a Stratemeyer pen-name) and appeared in the eight-volume "Outdoor Chums Series," which ran from 1911 to 1916, beginning with The Outdoor Chums, or, The First Tour of the Rod, Gun and Camera Club. The Chums had the usual outdoor adventures and solved the typical outdoor mysteries.

Ozar of the Aztec. One of several Tarzan knock-offs, Ozar was written by "Valentine Wood," aka Walker A. Tompkins. Ozar appeared in Top-Notch in 1933. An American scientific expedition venturing deep into the mountains of Mexico find a lost tribe of Aztecs. The entire expedition is slaughtered with the exception of an infant (the expedition brought a pregnant mother with them for some unaccountable reason). The Aztecs see in the baby the "predestined ruler of Karnux," said destinies speaking of a pale-skinned, fair-haired ruler. The Aztecs keep the child, now called Ozar, alive for twenty years, so that he will fulfill the "Five Sacred Commands of Mexlitl, the Sun God." Ozar does, in the end, in part by slaughtering the priests who are plaguing the otherwise peaceful city of Karnux. (Peaceful Aztecs. Suuuuure) Ozar kills dozens of warriors and priests, but in the end, Karnux is liberated. I mean, free.
 

Introduction
A. The Abbey Girls to Dusty Ayres
B. Bagley to Scott Burton
C. Orhan Cakiroglu to Dr. Theodore Cunliffe
D-E. Dana Girls to Don Everhard
F. Ralph Fairbanks to Miss Fury
G. The Gadget Man to G-8
H-I. Dr. Hackensaw to Baron Ixell
J. Jack, Doc & Reggie to Justice Syndicate
K. Calvin Kane to Kwa of the Jungle
L. Major John T. Lacy to Langhorne Lyte
M. Professor Maboul to Mr. Mystic
N. Lee Nace to Nyoka
O. Fergus O'Breen to Ozar the Aztec
P.  Penny Packer to Judge Pursuivant
Q.  Oliver Quade to Sebastian Quin
R. Ed Race to Captain Rybnikov
S. The Safety First Club to Tom Swift
T-U. Tahara to Godfrey Usher
V. Lieutenant Valcour to Norton Vyse
W. Inspector Wade to Dr. Xavier Wycherley
X-Z. X Bar X Boys to Zorro
Links.