For esthetic reasons, I kept series and sets together although the system could clearly have been successful had they been separated.

Judaica texts, my large collection of dictionaries, and certain other reference materials are used more frequently than other books in the collectgion. They were placed in the living room at arm’s height. A system based upon classification would place books, irrelevant of the frequency of their use, in a random location, and would not necessarily be as accessible as desired.