1. Beale’s Expedition Report to U. S. Congress in Washington, December 15, 1859
https://babel.hathitrust.org/cgi/pt?view=image;size=100;id=mdp.39015030947298;page=root;seq=9;num=1
2. Edward Fitzgerald Beale—A Pioneer in the Path of Empire 1822-1903. Stephen Bonzal. G. P. Putman’s Sons. The Knickerbocker Press, New York and London, 1912
Chapter XIII—The Journey along the 35th-Parallel, pages 230-255
https://archive.org/details/edwardfitzgeral01bonsgoog/page/n13
Proposed future railroad bridge location across Pecos River at good site five (5) miles above Anton Chico, NM would keep future RR elevation high so grades west to Canyon Blanco would be less.
https://archive.org/details/edwardfitzgeral01bonsgoog/page/n289
3. Wagon Roads West; A Study of Federal road surveys and construction in the Trans-Mississippi West, 1846-1869. Jackson William Turrentine (1915-2000). Berkeley, University of California Press, 1952
https://babel.hathitrust.org/cgi/pt?id=uc1.$b97819;view=1up;seq=9
Chapter XV: Beale’s Wagon Road Along the Thirty-fifth Parallel: Fort Smith to the Colorado River: 1857-59, pp. 241-256
https://babel.hathitrust.org/cgi/pt?id=uc1.$b97819;view=1up;seq=263
4. Eastern Beale Wagon Road map
https://babel.hathitrust.org/cgi/pt?id=uc1.%24b97819;page=root;view=image;size=125;seq=246;num=224;orient=1
5. Western Beale Wagon Road map
https://babel.hathitrust.org/cgi/pt?id=uc1.%24b97819;view=image;seq=270;page=root;size=100;orient=1
6. Survey of A Wagon Road from Fort Smith to the Colorado River. Grant Foreman, Chronicles of Oklahoma, Vol. 12, No. 1, March 1934, pp. 93-96 (73-76)