 | Inland Empire Railway Historical Society
The IERHS, a non-profit corporation in the state of Washington, is primarily interested in the preservation of railroad history by word, deed and action. |
 | Katy Railroad Historical Society
Historical information on the Missouri - Kansas - Texas (MKT) Railroad, also known as the Katy. |
 | Lackawanna and Wyoming Valley Rail Historical Society
HRHS chapter. Information on Northeast Pennsylvania railroads, including D and H, LV, CNJ, R and N, and PRR. |
 | Lehigh Valley Railroad
Lehigh Valley Railroad historical information and pictures. |
 | Long Island Rail Road Historical Society LIRRHS
Railroad historical society focusing on the history of the Long Island Rail Road (LIRR), Brooklyn Eastern District Terminal Railroad (BEDT), and the Degnon Terminal Railroad. |
 | Maryland and Pennsylvania Railroad Preservation Society
Railroad historical society dedicated to the preservation and restoration of existing physical plant of the Maryland and Pennsylvania Railroad, also known as the Ma and Pa. |
 | Mid-South Rail Heritage Foundation
Historic railroad preservation foundation museum project in Western Kentucky with emphasis on the Nashville Chattanooga and St. Louis Railway. |