Joseph Blumenthal was an American printer and publisher, typographer, and book historian. As founder of the Spiral Press, he was a well-known figure in the 20th-century fine-press movement, designing and printing work for prominent clients such as the poet Robert Frost. In 1952, the American Institute of Graphic Arts awarded him a medal for craftsmanship in printing. Blumenthal was also a self-taught historian of books and printing and wrote both anecdotal and more scholarly accounts of the book arts.