The existence of and measurement data for Witness (or Bearing) Trees is contained in the original field notes of the General Land Office. Although often difficult to read or decipher, they contain important information for the re-establishment of property lines in their original locations.
Modern-day surveyors are required to search for and utilize this data, even if their measurement capabilities are extremely more precise than those used to mark and locate the tree. Original Public Lands Survey System (PLSS) monuments and other marks, like these, control land locations in all 30 public domain states. The PLSS was instituted by Congress in 1785 and continues to be the basis for land titles in those states.
The sample field notes to the left are from Colorado's Mesa County.
Witness Tree Consulting, Inc.
P.O. Box 1197
Dewey, AZ 86327-1197
928-460-0230

Bearing Tree in Arizona near Grand Canyon
May's advice from Dennis:
If all that matters are coordinates, let's get rid of licensed land surveyors. No need to waste time on the records, evidence, or the source of those coordinates. Hand-held GPS units can replace our entire profession....based on how some of us operate!