Magazine Publishers was a
pulp magazine publishing house established by Harold Hersey and later owned by
A. A. Wyn in 1929. Under Wyn, it was known as "Ace Magazines", hence titles such as
Ace Mystery and
Ace Sports. They also used the name "Periodical House", and also branched out to publishing comic books as
Ace Comics. In the 1940s the company also began publishing books.