Narrow Gauge Railroad History:
PacificNG.com – Pacific Coast Narrow Gauge - Dedicated to the history of narrow gauge railroading in western North America.
Southern Pacific Narrow Gauge Historical Society - History of narrow gauge railroads and the Southern Pacific Railroad
Truckee Donner Railroad Historical Society - Study of railroads in the Truckee Donner area.
Western Logging Historical Society - For those interested interested in the history of logging in the western United States.
Museums Featuring Narrow Gauge Equipment:
Nevada County Narrow Gauge Railroad Company
NCNGRR – Nevada County Narrow Gauge Railroad & Nevada County Traction Company
NGDiscussion – Narrow Gauge Railroad Discussion Forum
NVnarrowgauge – Narrow Gauge Railroads of Nevada
WSLC – West Side Lumber Company