The Composing Room, founded in 1927 by Sol Cantor and Dr. Robert Leslie in New York City, was not only the city’s preeminent typesetting firm, but also the hub for progressive intellectual and educational activities within graphic arts from the late 1930s through the 1960s. Under the guidance of Leslie, The Composing Room held exhibitions, lecture series, type clinics, and produced one of America’s most influential graphic arts magazines, PM (Production Manager), later called AD (Art Director).