Annuals. American Annual of Photography, 1912. Aperture Magazine discussing his "Space-Time" theory and

discussing his "Space-Time" theory and his belief that photography should reveal the hidden forces of nature

including long list of prior exhibitions

" celebrating the blur of a moving hand or the soft light of a rainy morning

Grete Stern

Annuals. American Annual of Photography, 1912. Aperture Magazine discussing his "Space-Time" theory andVol. XXVI. Edited by Percy Y. Howe. NY, 1911. Articles on The American Salon, telephoto lenses, photographing against the light, color photography, sensitizing platinum paper by Paul Anderson, stereoscopic night photography, the hands in portraiture, photographing in Bermuda, Ozobrome improvements, The Life Story of a Scantling, and more. Photos by Elias Goldensky, Rudolf Dhrkoop, Harold Casneaux, William Crooke, Rudolf Eickemeyer, Knaffle & Bro.,