Underground Miners

Steamtown National Historic Site

The Railfan Network

Frank's Place (Blog)

ExpertGPS Website

Abandoned Railroads of the United States

Brief History of New York City Transportation
(Part of this is now the "High Line" park)

Transportation History: The Trolley, Tram and Streetcar

All About The Street Car, Trolley and Subways

Historical Research and Development of the Transcontinental Railroad