found: Bookbinding, and the care of books, 1991:CIP t.p. (Douglas Cockerell) data sheet (b. 1870; d. 1945)
found: LC data base, 5-21-91(hdg.: Cockerell, Douglas; no usage)
found: BL H&SS, 17 Dec. 1999(hdg.: Cockerell, Douglas, 1870-1945)
found: Some notes on bookbinding, 1929:t.p. (Douglas Cockerell)
found: VIAF, accessed April 25, 2019:54512859 (hdgs.: Cockerell, Douglas, 1870-1945; Cockerell, Douglas (Douglas Bennett), 1870-1945; Cockerell, Douglas Bennett (British bookbinder), 1870-1945)
found: Oxford dictionary of national biography, accessed online April 25, 2019:Cockerell, Douglas Bennett (1870-1945. Born Sydenham Hill, London; apprenticed at Doves Bindery in 1893; set up his own bindery in 1897; taught bookbinding at London Central School of Arts and Crafts; died Letchworth, 1945)