Union Pacific RR-History and Photos
- The site provides chronological links, photographical connections, equipment information, and links to museums.
- http://www.uprr.com/aboutup/history/

ATSF History Sites
- A compilation of web sites providing historical information about the Atchison, Topeka, and Sante Fe Railroad.
- http://www.atsfrr.com/links/atsf/history.htm

Railway & Locomotive Historical Society
- This organization promote research and to encourage preservation of documentation pertinent to business history, finance, labor history, and biography as well as technology. The site includes historical railroad information including maps, photos and news
- http://www.rrhistorical-2.com/rlhs/

www.rrhistorical.com
- This site links to railroad historical societies, railroad history resources, railway museums and other miscellaneous sites.
- http://www.rrhistorical.com/

Fallen Flag Railroad Photos
- This extensive list of railroads no longer operating provides access to photographs, rosters, and other information about these railroads.
- http://www.rr-fallenflags.org/

The Pennsylvania Railroad Historical & Technical Society
- This site provides information about the history of the PRR, access to technical information, archives, equipment diagrams, and other helpful material for persons interested in the PRR.
- http://www.prrths.com/PRR_Default.html

Soo Line Historical and Technical Society
- Provides details about the Soo Line and its predecessors. Includes information for modelers about available models, decals, and historical detail.
- http://www.sooline.org/index.html

Illinois Central Railroad Historical Society
- This society publishes a magazine, offers models and materials about the IC Railroad through the years, and provides photographs of equipment used by the IC in the various names under which the railroad operated.
- http://www.icrrhistorical.org/

Louisville & Nashville Railroad Historical Society
- Non-profit educational organization formed in 1982 for the purpose of collecting, organizing, preserving, and sharing information and related material. Includes membership details, events, images and a company store. Located in Louisville, Kentucky, Unite
- http://rrhistorical-2.com/lnhs/

National New York Central Railroad Museum
- This site provides information about the NYC RR Museum operations, offers a virtual tour, and contains an image gallery of the NYC RR.
- http://www.nycrrmuseum.org/

B&O Railroad Museum
- A web site devoted to the history of railroading as related to the B&O Railroad, the C&O Railway, the Western Maryland Railway, and the railroads of the mid-Atlantic region.
- http://www.borail.org/

Historical Model Railway Society
- Comprehensive and interactive site for all UK railway modellers, historians and enthusiasts
- http://www.hmrs.org.uk