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 Resource Type: Map Access & Availability: Loading
2. Huang chao yi tong yu di quan tu 皇朝一統與地全圖 Author/Creator: Liu, Yan, active 19th century Publication/Creation: Qing Daoguang 22 [1842] Resource Type: Map Access & Availability: Loading
3. 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 Resource Type: Map Access & Availability: Loading