author
A late-19th-century writer from Quincy, Illinois, best known for an eccentric history of playing cards that mixes historical curiosity with bold personal theories. His surviving work also introduces his own card game, "Guest," giving it the feel of both a hobbyist study and a self-published invention.

by H. D. Catlin
Very little confirmed biographical information about this author is easy to find today. The clearest detail available in the surviving record comes from the 1893 title page of Catlin's Historic Origin of the Playing Cards, which identifies him simply as H. D. Catlin and gives an address in Quincy, Illinois.
That book is the main reason the name remains in circulation. It explores the origins and symbolism of playing cards in a highly individual way, arguing for a grand historical meaning behind their design. The volume also includes Catlin's New, Original and Scientific Game of Guest, showing that he was not only interested in card history but also in creating a game of his own.
Because reliable sources about his life are scarce, it is safest to remember him as an obscure American enthusiast-author of the 1890s whose work survived through library preservation and Project Gutenberg, rather than as a well-documented public figure.