Barnes & Noble Initiates Paperback Art Line, PW, June 4, 1962, at 130-131 (announcing the new series for September 1962 and explaining that the series originated with Ysel Press, Ltd., of Holland and will be published in other countries as well, namely in Britain by Branford).
Harper Buys B&N Paperback Lines, PW, Dec. 13, 1971, at 28 (Harper & Row took over the Barnes & Noble paperback lines, including the B&N Art Series, the College Outline Series, and the Everyday Handbooks)