From http://www.penguinputnam.com/static/packages/us/about/adult/nal.htm

In the fifteen years immediately following World War II, paperback publishing came of age in the United States, with a handful of companies leading the way. Ten years after conceiving of the British based Penguin imprint in 1935, Allen Lane established an American branch called Penguin Books, Inc. (PBI). The two men that Lane hired to run PBI—Kurt Enoch and Victor Weybright—soon decided to separate from their British counterpart in 1948 and founded New American Library (NAL). Introducing Signet and Mentor as leading imprints, NAL began with titles such as William Faulkner's Sanctuary, D. H. Lawrence's Lady Chatterly's Lover, and John Steinbeck's Tortilla Flat. After selling at least 3 million copies of James Jones's From Here to Eternity in its first year of publication, NAL was quick to publish the popular fiction of Ian Fleming and Mickey Spillane.

"Good reading for the millions" was the slogan of the founders of NAL more than fifty years ago, and it is equally appropriate for today's NAL. Offering a wide selection of fiction and nonfiction, NAL aims at reaching the largest possible number of readers, the true mass market. The NAL imprints—Signet, Onyx, Signet Classics, and Roc—publish over four hundred titles each year. The majority of the titles are original works, supplemented by reprints originating primarily from sister imprints Viking, Dutton, and Putnam.

Most recent New York Times bestsellers for NAL include nonfiction titles such as Black Hawk Down by Mark Bowden and Life on the Other Side by Sylvia Browne. Fiction that has appeared on the New York Times bestseller list during the past year includes works by Catherine Coulter, John Lescroart, Stuart Woods, Greg Iles, and John Jakes.