Research materials relating to Santa Fe Trail trading post Bent's Fort located in Otero County, Colorado. The file includes pamphlets about the Santa Fe Trail Association, Pecos National Monument, Fort Union, Cimarron County, Bent's Old Fort, Butterfield Trail Historical Association, Fort Larned, and Fort Harker Museum; a map of the Santa Fe Trail in Kansas; newspaper clippings; notes by Armitage on Bent's Fort; postcards; and magazine clippings.