Bénézit (Gill, Eric Arthur Rowton Peter Joseph; sculptor and wood engraver, Ditchling Common, Sussex; 1882-1940)
British Library. Modern British and American private presses (1850-1965), c1976 p. 161, etc. (author statements: Eric Gill, A.E.R.G. [this latter on, among others, the work titled God and the dragon, which is earlier ed. of Nisi Dominus])
DNB, 1931-1940 (Gill, Arthur Eric Rowton, 1882-1940; Eric Gill; stonecarver, engraver, typographer, author; Tertiary of Dominican Order)
His Wood-engravings, being a selection of Eric Gill's engravings on wood ... 1924.
New Encycl. Britannica (Gill, Arthur Eric Rowton, 1882-1940; with H.D.C. Pepler founded St. Dominic's Press in 1915)