Wikipedia:
LITERARY MARKET PLACE: THE BUSINESS DIRECTORY OF AMERICAN BOOK PUBLISHING 44 (1960-1961 EDITION):
THE LIBERAL ARTS PRESS, INC.
155 W. 72nd St., New York 23
TRafalgar 3-3475
Pres. & Ed., Oskar Piest
College texts in liberal arts; “Library of Liberal Arts,” “American Heritage Series,” “Library of Religion” & “Forum Books”
Liberal Arts Press Merges with Bobbs-Merrill, Publishers Weekly, Jan. 16, 1961, at 97:
The Liberal Arts Press, Inc., has been merged into the Bobbs-Merrill, Co., a subsidiary of Howard W. Sams & Co., Inc. Oskar Piest, who founded the Liberal Arts Press in 1948 and has been its president, will become a vice-president of Bobbs-Merrill and general editor of the new Liberal Arts Press Division of Bobbs-Merrill.
The Liberal Arts Press has specialized in publishing, for college courses, classics in the fields of philosophy, political science, history, religion and fine arts. It now has over 180 titles in print largely in paperback editions, but with many also available in cloth editions.