https://scholarsarchive.byu.edu/gbn/vol50/iss2/10/
"Using the original land survey notes to reconstruct presettlement land" by S. M. Galatowitsch
Rectangular surveys completed between 1796 and 1925 by the General Land Office have frequently been used in the eastern and central U.S. to determine land...
https://www.usgs.gov/media/images/map-greater-and-gunnison-sage-grouse-presettlement
Map of Greater and Gunnison Sage-grouse presettlement | U.S. Geological Survey
Map of Greater and Gunnison Sage-grouse presettlement and current distribution throughout their range in North America.
sage grouse