Get ready to test your powers of observation in the second edition of this unique puzzle series! The 25 pairs of classic covers from The Saturday Evening Post are seemingly identical, but 12 to 18 subtle changes have been made to one of the pictures. Children and adults will have to be sharp to find the differences in these famous illustrations by Norman Rockwell, John Falter, Stevan Dohanos, Benjamin Kimberly Prins, John Philip Falter, and many other well-known artists of that era.

Get ready to test your powers of observation -- again! Here are 25 more pairs of full-color illustrations of classic covers from The Saturday Evening Post, one with up to 18 subtle changes from the unaltered original art.