- About Photography: Nudes 1920-1940 - Consists of on the history of nude photography from 1920 to 1940, emphasizing the roles of the famous master photographers. No images.
- Albumen Photographs - Presents the art and science of albumen printing, contemporary research, conservation and treatment of images.
- American Museum of Photography - Covers daguerreotypes to modernism. Research center features a guide early photo processes, book reviews and information on preserving/protecting valuable photographs.
- Arab Foundation for the Image - A non-profit association that collaborates with Elysée Foundation in Lausanne to promote photography in the Middle East and the North Africa by locating, collecting and preserving the photographic heritage of that region.
- Central Pacific Railroad - Has a photographic history museum; also stereoviews of the first transcontinental railroad.
- City-Gallery.com - Information on photography, family photographs and images, and genealogy. Focus is on 19th century photography.
- Cuarterolo Archive - The Cuarterolo archive is an image bank focused on 19th century Argentine and Latin American photography that houses over 5000 historic photographs.
- Cut & Paste - A History Of Photomontage - Covering the artists involved in photomontage in the Berlin Dada movement, 1980s politics, and the present day.
- Early Visual Media - History of visual Media, photography pre-cinema prestidigitation danse macabre optical illusions.
- Finding Photographers - A worldwide index of the books and websites that list photographers and when they worked.
- Georgian Museum of Photography - Virtual museum of images from photography, including portraits, architecture, cultural and historical monuments.
- Historic Photo Archive - Kodachrome dating guide for vintage slides.
- A History of Photography - Includes an extensive history, from earliest times to the 1920s. Includes information on all significant photographers with biographical data.
- History of Photography Timeline - A detailed timeline of photography from ancient times to the present.
- Index of UK photographers up to c1950 - Indexes and links for UK photographers, county by county, for the 19th and early 20th century.
- Lafayette Negative Archive - Catalogue of vintage photographs made by the Lafayette studio of London, containing images made between 1887 and the 1930s, categorized by subject. Has explanatory articles.
- Latin American Photography 1840-1920. M & M Cuarterolo's Collection - Large selection of early images of Argentina and other Latin American countries and information on the photographers active in the region between 1840 and 1920.
- Mathew J. Steffens - Steffens was THE photographer to Chicago's first "Gold Coast" residents...the richest of the rich. Commodore Steffens, as he was known because of his steam yachting and yacht club presidency, was one of Chicago's foremost society photographer from 1872 to the 1910's.
- Midley History of Photography - Presents essays by R. Derek Wood on the history of early photography, the daguerreotype and diorama.
- Painting and Photography - Some notes on the history of photography, mostly concerning the relationship between painting and photography.
- Photica Project - Contains information and articles on historical photographers and groups.
- Photo Revue - All about Czech and Slovak photography, history, theory, reviews, profiles.
- Photographer Nicephore Niepce - Dedicated to the History of Photography from its origins by French scientist and inventor Nicephore Niepce. Niepce discovered the process known as Heliography.
- Photographs: The Metropolitan Museum of Art - Images, history, and technical information about their collection of photographs.
- Photography in the 1840s - About Photography - Comparing the Calotype and the Daguerreotype, the first Welsh photograph, Irish pioneers, and French advances in the art of photography.
- Pinhole Photography - History of pinhole photography, including theory and construction details.
- The Big Six Portrait Photographers - Monographs on six professional portrait photographers from the turn-of-the-century.
- The Magic Mirror of Life: An Appreciation of the Camera Obscura - Many facets of the camera obscura (dark room); the origin of the photographic camera, its place in art, culture and education,vintage instruments,images, photographs, and working camera obscuras are included.
- The Weston Exposure Meter Site - Site dedicated to the Weston Exposure Meter from the earliest days to the Euromaster 3. Includes Photos, information and instruction books, and history of the company and its founder.
- Tintypes and Daguerreotypes - Article defines what tintypes and daguerreotypes are, the history of the processes, the sizes they came in, and the years they were popular.
- Women in Photography Archive - Focuses on the role of women in photography. Includes essays on women photographers and an online gallery.
