This 1907 book features "find the hidden picture" puzzles all with an animal theme. Some of them are quite challanging. They print out very nicely because they are black line drawings.

You can see three sample pages by clicking below:

Sample Page 1 ---- Sample Page 2 ---- Sample Page 3

The book contains all 50 or so puzzles and their answers. You can download it (Abobe PDF) by clicking here. .

Check out our other free printables.