Self proclaimed to be one of the most interesting and novel inventions at the St. Louis World's Fair of 1904. And they were.

This device would take a photograph, develop it, and produce a picture in a minute. All for a nickel. It was a big hit at the fair. I am sure they continued to be so at places like Coney Island and other places of amusement in the early part of the 20th century. This Ad came from Billboard magazine dated April 16, 1904. So their self proclaimed success was a fact in 1904.