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.
- http://www.photographymuseum.com

Midley History of Photography
- Presents essays by R. Derek Wood on the history of early photography, the daguerreotype and diorama.
- http://www.midley.co.uk/

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.
- http://www.diaxa.com/weston/

Cut & Paste - A History Of Photomontage
- Covering the artists involved in photomontage in the Berlin Dada movement, 1980s politics, and the present day.
- http://homepage.ntlworld.com/davepalmer/cutandpaste/

Cuarterolo Archive
- The Cuarterolo archive is an image bank focused on 19th century Argentine and Latin American photography that houses over 5000 historic photographs.
- http://archivocuarterolo.8m.com

Early Visual Media
- History of visual Media, photography pre-cinema prestidigitation danse macabre optical illusions.
- http://www.visual-media.be/

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.
- http://brightbytes.com/cosite/cohome.html

Index of UK photographers up to c1950
- Indexes and links for UK photographers, county by county, for the 19th and early 20th century.
- http://www.users.waitrose.com/~rodliffe/

Historic Photo Archive
- Kodachrome dating guide for vintage slides.
- http://www.historicphotoarchive.com/f2/kodachrome.html

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.
- http://lafayette.150m.com/

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.
- http://www.photography.about.com/library/weekly/aa040300a.htm

Finding Photographers
- A worldwide index of the books and websites that list photographers and when they worked.
- http://www.findingphotographers.com/

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.
- http://www.photography.about.com/library/weekly/aa061702a.htm

Photo Revue
- All about Czech and Slovak photography, history, theory, reviews, profiles.
- http://www.photorevue.com

History of Photography Timeline
- A detailed timeline of photography from ancient times to the present.
- http://www.photo.net/history/timeline

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.
- http://www.maine.com/photos/tintypes.htm

Pinhole Photography
- History of pinhole photography, including theory and construction details.
- http://www.photo.net/photo/pinhole/pinhole

Magic Lanterns
- Description of the medium plus information on optical systems, components, lanterns types and slide identification.
- http://www.magiclantern14.btinternet.co.uk/

Albumen Photographs
- Presents the art and science of albumen printing, contemporary research, conservation and treatment of images.
- http://albumen.stanford.edu/

Photographs: The Metropolitan Museum of Art
- Images, history, and technical information about their extensive collection of photographs.
- http://www.metmuseum.org/collections/department.asp?dep=19

Georgian Museum of Photography
- Virtual museum of images from photography, including portraits, architecture, cultural and historical monuments.
- http://www.photomuseum.org.ge

A History of Photography
- Contains an extensive history, from earliest times to the 1920s. Includes information on all significant photographers with biographical data.
- http://www.rleggat.com/photohistory/

Women in Photography Archive
- Focuses on the role of women in photography. Includes essays on women photographers and an online gallery.
- http://www.sla.purdue.edu/WAAW/Palmquist/index.htm

Central Pacific Railroad
- Has a photographic history museum; also stereoviews of the first transcontinental railroad.
- http://cprr.org/

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.
- http://www.fai.org.lb/

City-Gallery.com
- Information on photography, family photographs and images, and genealogy. Focus is on 19th century photography.
- http://www.city-gallery.com/

Photica Project
- Contains information and articles on historical photographers and groups.
- http://www.cwriley.com/photica/index.htm

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.
- http://www.niepce.com/home-us.html