Suggested citation and version history for: Billingsley, George H. and Priest, Susan S., 2010, Geologic map of the House Rock Valley area, Coconino County, northern Arizona: U.S. Geological Survey Scientific Investigations Map 3108, scale 1:50,000, 1 sheet, includes 23 p. pamphlet [http://pubs.usgs.gov/sim/3108/]. Version 1.0, January 28, 2010 Initial release online at http://pubs.usgs.gov/sim/3108/