This little gem was published right back in 1963. It is the first in a series featuring a lad with the unusual name of Stanley Lambchop. Imagine going through life with that name as well as being half the person you used to be. You see, Stanley and his younger brother Arthur are given a big bulletin board by their dad for displaying pictures and posters which he hangs it on the wall over Stanley's bed. During the night the board falls from the wall, flattening Stanley in his sleep. Stanley somehow miraculously survives and makes the best of his altered state. Soon he is discovering that he can enter locked rooms by sliding under the door, and can be used as a kite, (flying high). Stanley helps catch some art museum robbers by posing as a painting on the wall. One special advantage is that Flat Stanley can now visit his friends by mail.
Students in the class have made their own Flat Stanleys to take on adventures. They will make each adventure into a PhotoStory to share their holiday experiences.
Here is a nifty clip about Flat Stanley: