The Secret Museum of Mankind
Published in 1935, the Secret Museum is a mystery book. It has no author or credits, no copyright, no date, no page numbers, no index. Published by "Manhattan House" and sold by "Metro Publications", both of New York, its "Five Volumes in One" was pure hype: it had never been released in any other form.
Advertised as "World's Greatest Collection of Strange & Secret Photographs" and marketed mainly to overheated adolescents (see the 1942 Keen ad, left), it consists of nothing but photos and captions with no further exposition.
Good example of the type of quirky digital edition only a keen amateur would put together. And what a strange imperialistic text....