1. 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 Format: Map Access & Availability: Loading
2. Hydrology of the unconfined aquifer system, Rancocas Creek area, Rancocas, Crosswicks, Assunpink, Blacks, and Crafts Creek Basins, New Jersey Publication/Creation: [Reston, Va.?] : U.S. Geological Survey, 2002 Format: Map Access & Availability: Loading