Contains the names, dates, and nationalities of more than 60,000 photographers. Click on "Launch Database" at the left of the page to begin.
American women photographers : a selected and annotated bibliography / Martha Kreisel. Westport, Conn. : Greenwood Press, 1999.
Black photographers, 1840-1940 : an illustrated bio-bibliography / Deborah Willis-Thomas. New York : Garland Pub., 1985.
Biographies of western photographers : a reference guide to photographers working in the 19th century American West / by Carl Mautz. Nevada City, Calif. : Carl Mautz Publishing, 1997.
Contemporary photographers / executive editor, Martin Marix Evans. New York : St. James Press, c1995.
Craig, John. Craig’s Daguerreian Registry
Alphabetical listing of Daguerreian photographers, with brief biographical information, based on 25 years of research.
Das Lexikon der Fotografen : 1900 bis heute / Hans-Michael Koetzle. München : Knaur, 
Grove Dictionary of Art Online
Comprehensive art reference covering all forms of the visual arts: painting, sculpture, architecture, graphic and decorative arts, and photography from prehistory to the 1990s. Links to color images from the world's leading museums, picture libraries, and galleries.
International guide to nineteenth-century photographers and their works : based on catalogues of auction houses and dealers / Gary Edwards. Boston, Mass. : G.K. Hall, c1988.
Macmillan biographical encyclopedia of photographic artists & innovators / Turner Browne, Elaine Partnow. New York : Macmillan ; London : Collier Macmillan, c1983.
Maison Nicéphore Niépce: The Reference Site About the Inventor of Photography
Photographers encyclopaedia international 1839 to the present / Michèle Auer, Michel Auer. Hermance, Switzerland : Editions Camera obscura, c1985.
Pioneer photographers of the far west : a biographical dictionary, 1840-1865 / Peter E. Palmquist and Thomas R. Kailbourn. Stanford, Calif. : Stanford University Press, 2000.
Prestel-Lexikon der Fotografen : von den Anfängen 1839 bis zur Gegenwart : mit Glossar / herausgegeben von Reinhold Misselbeck.. München ; New York : Prestel, c2002.
Women in Photography International
Founded in 1981, Women in Photography International “promotes the visibility of women photographers and their work.”