Look at the card backs (the sides printed in black and white). The lower left hand corner has an 11-character identifier set in small type in the lower left corner The _last digit_ in the identifier is the card number. For example, the identifier for card #1 is 1145xxx0601. The whole list of cards is as follows:
Card 1 (1145xxx0601)
Front (the color side): The crevasse in the "Spelunking" adventure. Back: Major and Resonant powers for the Rod.
Card 2 (1145xxx0602)
Front: A side view of the castle from the "Uninvited Guests" adventure. Back: A side view of the temple from the "Forgotten Temple" adventure.
Card 3 (1145xxx0603)
Front : A top view of the temple from the "Forgotten Temple" adventure. Back: The ruined ground floor of the temple from the "Forgotten Temple" adventure.
Card 4 (1145xxx0604)
Front : A top view of the Citadel of Chaos from the "Citadel of Chaos" adventure. Back: A side view of the Citadel of Chaos from the "Citadel of Chaos" adventure.
Card 5 (1145xxx0605)
Front: A top view of the castle from the "Uninvited Guests" adventure. Back: The coat of arms of the Captains of Law.
Card 6 (1145xxx0606)
Front: A tactical map of the crevasse in the "Spelunking" adventure. Back: A picture of the Rod, both fully assembled and in segments, and a list of the Rod's minor powers.