Derry Southwestern Railway Company (La.), map showing route in 1921.     Source: United States John Alexander Kerr. Soil Survey of Natchitoches Parish, Louisiana, Southern Sheet [map]. [Washington, D. C.]: U. S. Dept of Agriculture, Bureau of Soils, 1921.           << 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.