Most of the photos on this site were extracted from reference images (high-resolution tiffs, 20 to 200 megabytes in size) from the Library of Congress research archive. (To query the database click here.) Many were digitized by LOC contractors using a Sinar studio back. They are adjusted by your webmaster for contrast and color in Photoshop before being downsized and turned into the jpegs you see here.
Black-and-white and color historical photos of American railroads, locomotives, trains, depots and stations from the late 19th century and early to mid 20th century. Photos of steam locomotives and diesel engines. Elevated railways in New York and Chicago. There are hundreds of photos in this gallery.