Keystone Mills Company (Tex.), Map Showing Trams in 1937.     Source: F. A. Silcox and T. W. Norcross, U.S. Department of Agriculture, Forest Service. Davy Crockett National Forest [map] . 1937. Courtesy of Fondren Library, Southern Methodist University, Dallas, Texas.           << 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.