Let's find Digimon, a piece of Digimon Merchandise from the Digimon Adventure era, is a Digimon book released by Scholastic around December 2000 in the USA. The book has long been out of print but can be found second hand online.
The book describes it as "A hide and seek adventure - Dozens of Digimon are hiding! Find them all!" and is around 32 pages. The book has the reader look through each crowded picture and find the Digimon specified.
Book blurb[]
How many Digimon characters can find hiding in the pages of this book? Good, evil and digidestined, they're waiting for you in Let's find Digimon. There's a hide and seek adventure on every page!