Newhall, Nancy P.H Emerson : the fight for photography as a fine art - New York : Aperture, 1975. - 266 p. il - An Aperture Monograph . Bibliografia ; Cronologia ISBN: 9-2334-58-4 Subjects--Personal Names: Emerson, P.H Subjects--Topical Terms: FOTOGRAFIAARTE Subjects--Geographic Terms: REINO UNIDO