41. Reconnaissance geologic map of the Hayfork 15ʹ quadrangle, Trinity County, California Author/Creator: Irwin, W. P. 1919-2012. (William Porter) Publication/Creation: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, 2010 Resource Type: Map Access & Availability: Loading
42. Reconnaissance geologic map of the Hyampom quadrangle, Trinity County, California Author/Creator: Irwin, W. P. 1919-2012. (William Porter) Publication/Creation: Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 2010 Resource Type: Map Access & Availability: Loading
43. Reconnaissance geologic map of the Kuskokwim Bay region, southwest Alaska : Including the Bethel, Goodnews Bay, Nushagak Bay, Hagemeister Island, Baird Inlet, Cape Mendenhall, Kuskokwim Bay, Nunivak Island, Saint Matthew, and Pribilof Islands 1:250,000-scale quadrangles Author/Creator: Wilson, Frederic H., 1950- compiler Publication/Creation: Reston, Va. : U.S. Geological Survey, U.S. Department of the Interior, 2013 Resource Type: Map Access & Availability: Loading
44. Reconnaissance geologic map of the Sliderock Mountain area, Sweet Grass and Stillwater counties, Montana Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
45. Reconnaissance geologic map of the southern Sierra Nevada, Kern, Tulare, and Inyo counties, California Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : U.S. Geological Survey Information Services [distributor] Resource Type: Map Access & Availability: Loading
46. Reconnaissance geologic map of the west half of the Bend and the east half of the Shevlin Park 7 1/2ʹ quadrangles, Deschutes County, Oregon Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
47. Reconnaissance geologic map of the west half of the Crescent 1⁰ by 2⁰ quadrangle, central Oregon Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading
48. Reconnaissance of ground-water resources of northeastern Valley County, Montana Author/Creator: Geological Survey (U.S.) Publication/Creation: Reston, Va. : U.S. Geological Survey ; Denver, CO : For sale by USGS Information Services, 2004 Resource Type: Map Access & Availability: Loading
49. Reconnaissance of ground-water resources of the Fort Peck Indian Reservation, northeastern Montana Author/Creator: Geological Survey (U.S.), cartographer Publication/Creation: Helena, Montana : U.S. Department of the Interior, U.S. Geological Survey, 1991 Resource Type: Map Access & Availability: Loading
50. Reconnaissance photogeologic map of young faults in the Elko 1° by 2° quadrangle, Nevada and Utah Author/Creator: Geological Survey (U.S.) Publication/Creation: Denver, CO : For sale by Map Distribution Resource Type: Map Access & Availability: Loading