It is probably impossible to ascertain the origin of the old optical illusion of dropping one metal cup into another and having it seemingly pass through the cup. However, the written record can perhaps give us some sense of the age of the trick. In several issues of the nineteenth-century magazine Our Young Folks appears a series of articles titled "Lessons in Magic" by P. H. Cannon. In the Sep. 1865, Vol. 1 No. 9 issue is the continuation of a discussion of “The Inexhaustible Hat”, in which is a description of the stunt of passing one tin cup through another (p. 574), using the same method that has long been a standard in the Cups and Balls. This description is the earliest so far found for this stunt.