Marzollo, Jean. I spy : a butterfly / riddles by Jean Marzollo ; photographs by Walter Wick. - New York : Scholastic, c2006. - 1 v. : col. ill. ; 23 cm. - Scholastic reader. Level 1 . "Cartwheel books." ISBN: 0439738652 (pbk. : alk. paper) LCCN: 2005033230 Subjects--Topical Terms: Picture puzzles--Juvenile literature. LC Class. No.: GV1507.P47 / M2796 2006 Dewey Class. No.: 793.73