Literature
Richard Lorenz, Imogen Cunningham: 1883-1976 (Köln, 2001), p. 216
Catalog summary
Imogen Cunningham TWO SHELLS mounted, signed by the photographer in pencil on the mount, her '4540 Harbor View, Oakland, California' letterpress studio label and the Imogen Cunningham Trust's pictorial 'I. C.' stamp, with stamped number '520,' on the reverse, matted, circa 1930 Provenance Acquired by Margaret W. Weston, 1995 Literature Richard Lorenz, Imogen Cunningham: 1883-1976 (Köln, 2001), p. 216