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The I Spy Challenger series uses photographs from the original I Spy books with new challenging riddles by Jean Marzollo
Ultimate Challenger!
Photographs by
Walter Wick
Riddles by Jean Marzollo
Scholastic/Fall 2003
Year-Round Challenger!
Photographs by
Walter Wick
Riddles by Jean Marzollo
Scholastic/Fall 2001
Extreme Challenger!
Photographs by
Walter Wick
Riddles by Jean Marzollo
Scholastic/Fall 2000
Gold Challenger!
Photographs by
Walter Wick
Riddles by Jean Marzollo
Scholastic/Fall 1998
Super Challenger!
Photographs by
Walter Wick
Riddles by Jean Marzollo
Scholastic/Fall 1997