The National Map U.S. Geological Survey
Land Checkerboarding in the Navajo Off-Reservation Trust Land, created for my documentary on the land checkerboard phenomenon in the USA. : r/MapPorn
A Cost-Benefit Analysis of the National Map: Usgs Circular 1271: Halsing, David L., U. S. Department of the Interior, United, Et Al: 9781287185338: : Books
Federal Study: Shale Development Fragmenting Allegheny County Forests
TOPOGRAPHIC MAPPING BY U. S. GEOLOGICAL SURVEY AT 1:24,000 SCALE
File:North america terrain 2003.jpg - Wikimedia Commons
2012 GISCO Track, Volunteer Geographic Information at the USGS - The National Map Corps, Greg Matthews
Fugro wins new contract with US Geological Survey to support national mapping initiatives - Cyprus Shipping News
Geologic Map or North America.: Geographicus Rare Antique Maps
Map of the United States: U. S. Geological Survey 1883 – The Antiquarium Antique Maps
1932 Vintage USA Geological Map, Relief Map
Yellowstone National Park and Portion of Yellowstone Forest Reserve. Topography Sheet XVI.: Geographicus Rare Antique Maps