CASS, FRANK (1930– ), British publisher. Born in London, Cass worked as a bookshop clerk and an antiquarian book dealer before becoming a publisher in 1957. Beginning by re-publishing out-of-print academic books, he became a leading publisher of academic journals, producing no fewer than 66 academic periodicals by the time he retired. Cass became well known in the Jewish world in 1971 when he acquired Valentine Mitchell (founded in 1949), Britain's leading publisher of Jewish interest works. His firm, Frank Cass & Co., publishes a wide variety of Jewish books and journals including The Jewish Year Book, The Library of Holocaust Testimonies, the Journal of Holocaust Education, and the Parker-Weiner Series on Jewish Studies. He has also provided an international publishing venue for many Israeli writers. Frank Cass & Co. was sold to the American firm Taylor & Francis in 2003.