[1][2][3][4] In 1918, he married Dr. Sarah Greenberg, a gynecologist, obstetrician, and the first woman in New York City to be licensed by the American Board of Obstetrics and Gynecology.
The Composing Room employed advanced type-setting methods that boasted quick turnarounds and high-quality work for high-circulation magazines including Vogue, Vanity Fair, and House and Garden.
The Composing Room worked directly with font foundries like Linotype and encouraged ligatures to be created for bad letter combinations.
It was the first typography house to be able to produce a range of font sizes (5-144pt) at all times; a proofing press for transparencies; and the first to install the All-Purpose-Linotype (APL) machines.
It expressed Leslie’s desire to identify and explore new approaches in graphic arts while creating a market for good machine typesetting.
[3][4][6] He also set up a graphic arts salon that leaders of the industry including Ladislav Sutnar, Alvin Lustig and Herbert Bayer could discuss design and talk shop.