In 1951 Barney Rosset purchased Grove Press. The Atlantic Monthly Press, under the aegis of its Publisher, Morgan Entrekin, acquired the Grove Press in 1985. It is now an imprint of the still-independent publisher, Grove/Atlantic Inc. In 2002 Grove/Atlantic signed an agreement with Penguin Putnam to publish select Grove Atlantic hardcovers in paperback under the Penguin and Signet imprints. http://www.writenews.com/2002/090602_penguin_groveatlantic.htm
Archives for Grove are located at Syracuse http://libwww.syr.edu/information/spcollections/