Peter Henry Emerson was a photographer and writer on photography.
Emerson started his career as a doctor but soon left medicine for photography. His naturalistic theories of photography led to a series of albums featuring platinum prints or photogravures. They include Life and Landscape on the Norfolk Broads (1886) (with the artist Thomas F. Goodall), Wild Life on a Tidal Water (1890) and Marsh Leaves (1895). Emerson was deeply influenced by JW's etchings, and his work was in turn admired by JW.
Fuller, John, 'P(eter) H(enry) Emerson,' Grove Dictionary of Art Online, http://www.groveart.com (accessed 8 June 2004); Newhall, N., P. H. Emerson: The Fight for Photography as a Fine Art, Millerton, 1975.