Note: This publisher record is for all the books from this publisher regardless of its corporate ownership: the initial one under Phillips and the later joint one under New American Library and Phillips. Some 1960s paperbacks state "Four Square Books are published by Four Square Books Limited, 173 New Bond Street, London, W1" but by 1966 other publications state "Four Square Books are published by the New English Library Limited from Barnard's Inn, Holborn, London, E.C.1". "Joint ownership for paperback series", The Guardian 1961-03-30 p24 (quote in full) "Godfrey Phillips, Ltd., and New American Library of World Literature (New American Library), of New York, have announced an agreement for joint ownership of the Phillips publishing subsidiaries, Four-Square Books and Ace Books. The announcement added that these enterprises had already attained more than 10 per cent of the paperback market in the British Commonwealth and this arrangement should greatly help to extend their growth." "Times-Mirror Acquires Two British Firms" LA Times 1961-03-30 pB1 announced Wednesday; 51% of Ace Books, Ltd. and of Four Square Books, Ltd.; thru T-M subsidiary NALWL; from "Godfrey Phillips, Ltd., a large British tobacco company", retains 49%