Grosset & Dunlap
Wikipedia: https://en.wikipedia.org/wiki/Grosset_%26_Dunlap
George T. Dunlap, Genesis of a Publishing Business: Chapters from the Memoirs Written for His Children Which the "Publishers' Weekly" Has Secured Permission to Print - Part I, PW, Aug. 10, 1935, at 277-280
Grosset and Dunlap Announces Plans, PW, May 12, 1945, at 1912-1914.
Universal Reference Library: New Grosset Paperback Series, PW, June 4, 1962, at 94 (discussing Grosset's fall 1962 "Paperback Guide to the Universal Library.")