1. Preliminary integrated geologic map databases for the United States. Digital Data for the reconnaissance geologic map of the lower Yukon River region, Alaska Author/Creator: Wilson, Frederic H., 1950- Publication/Creation: [Anchorage, Alaska] : U.S. Dept. of the Interior, U.S. Geological Survey, 2006 Format: Map Edition: Version 1.0. Access & Availability: Loading
2. Presidio of San Francisco Author/Creator: United States. National Park Service Publication/Creation: [Washington, DC] : National Park Service, [2003] Format: Map Edition: Rev. 3/03. Access & Availability: Loading