Rio Grande & Eagle Pass Railway Company (Tex.), Map Showing Industrial Tracks at the Santo Tomas, Darwin and Dolores Mines in 1918.     Source: Ashley, George. U.S. Geological Survey Bulletin No. 691-I, The Santo Tomas Cannel Coal, Webb County, Texas. Plate XXIX. [map]. Washington, DC: Government Printing Office, 1918. Counties: Webb County. Communities: Delores, Darwin, Minera, Santo Tomas. Remarks: The Santo Tomas mine operated their own narrow-gauge tram to move material from the mine to the Rio Grande & Eagle Pass Railway.           << Map Index             Information and images were digitized and proofread from the original source documents by Murry Hammond. Contact Murry for all corrections, additions, and contributions of new material.