1. Historic trail map of the La Junta 1⁰ x 2⁰ quadrangle, southeastern Colorado and western Kansas Author/Creator: Scott, Glenn R., 1918-2012 Publication/Creation: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, 2008 Resource Type: Map Access & Availability: Loading
2. Historic trail map of the Leadville 1⁰ x 2⁰ quadrangle, central Colorado Author/Creator: Geological Survey (U.S.) Publication/Creation: [Reston, Va.] : U.S. Geological Survey ; Denver, CO : For sale by USGS Geological Services, 2004 Resource Type: Map Access & Availability: Loading