(Stieglitz accused Mortimer of being responsible, along with others, for "a perilous situation" in photography) As I hold the future well-being of photography very dear I must see to it that these forces which militate against it be opposed and destroyed.

Alfred Stieglitz "Photo-Secessionism and its Opponents, Another Letter – The Sixth", New York, 20 October 1910, p. 8] (cited in: "Pictorial Photography in Britain 1900 – 1920", exhibition catalogue, Arts Council of Great Britain in association with The Royal Photographic Society, London 1978, p. 12)