I-2233 Geologic map, petrochemistry, and geochronology of the Precambrian rocks of the Fletcher Park-Johnson Mountain area, Albany and Platte counties, Wyoming, scale 1:24,000, 1995, ISBN 978-0-607-79411-3 Keywords: Albany county, Geologic map, Bedrock, Platte county, Geochemistry, Petroleum, Oil, Geologic time