1. Ramirez quadrangle, Texas : 7.5-minute series Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Reston, Va.] : U.S. Department of the Interior, U.S. Geological Survey, 2010- Format: Map Access & Availability: Loading
2. Randado quadrangle, Texas : 7.5- minute series Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Reston, Va.] : U.S. Department of the Interior, U.S. Geological Survey, 2010- Format: Map Access & Availability: Loading
3. Randolph quadrangle, Kansas : 7.5-minute series Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Reston, Va.] : U.S. Department of the Interior, U.S. Geological Survey, 2009- Format: Map Access & Availability: Loading
4. Random Lake quadrangle, Wisconsin : 7.5-minute series Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Reston, Va.] : U.S. Department of the Interior, U.S. Geological Survey, 2010- Format: Map Access & Availability: Loading
5. Rathbone quadrangle, New York : 7.5-minute series Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Reston, Va.] : U.S. Department of the Interior, U.S. Geological Survey, 2010- Format: Map Access & Availability: Loading
6. Ravena quadrangle, New York : 7.5-minute series Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Reston, Va.] : U.S. Department of the Interior, U.S. Geological Survey, 2010- Format: Map Access & Availability: Loading
7. Rawson quadrangle, New York : 7.5-minute series Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Reston, Va.] : U.S. Department of the Interior, U.S. Geological Survey, 2010- Format: Map Access & Availability: Loading
8. Raymondville quadrangle, Texas : 7.5-minute series Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Reston, Va.] : U.S. Department of the Interior, U.S. Geological Survey, 2010- Format: Map Access & Availability: Loading
9. Readburn quadrangle, New York : 7.5-minute series Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Reston, Va.] : U.S. Department of the Interior, U.S. Geological Survey, 2010- Format: Map Access & Availability: Loading
10. Reading quadrangle, Pennsylvania : 7.5-minute series Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: [Reston, Va.] : U.S. Department of the Interior, U.S. Geological Survey, 2010- Format: Map Access & Availability: Loading