Heerman, A. L.

Reports of explorations and surveys to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean... Washington, Beverley Tucker, Printer, 1855. Chapter IV. Explorations from A. D. 1852 to A. D. 1857. See, especially, page 79: "Reconnaissance for a railroad route between Pimas village and El Paso, by Lieutenant J. G. Parke, topographical engineer, in 1854." ... Lieutenant Parke, assisted by Mr. H. Custer, topographer, and Dr. A. L. Heerman, physician and naturalist, and provided with barometers, odometers, and compass, on the 24th of January, 1854 left San Diego with a party of twenty-three men, exclusive of an escort, under Lieutenant Stoneman, of twenty-eight dragoons. ...
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