i've always loved optical illusions and optical toys, and now i'm going to try my hand at producing one. i'm teaching a class on flip books this sunday from 1 pm to 3pm. the cost is only $35 (or $40 at the door). please let me know if you'd like to attend, and spread the word!
this website hosts a collection of nearly 6000 flip books. the one pictured below is from 1882.