Legend (Miscellaneous/SurveyControl)

Survey Control (0) NAD 83 Traverse (1) NAVD 88 Benchmarks (2) 10000-Series Traverse (1970-1993) (3) 10000-Series Benchmarks (1970-1993) (4) X-Series Traverse (1950-1970) (5) X-Series Benchmarks (1950-1970) (6) Historic Traverse (Before 1950) (7) Historic Benchmarks (Before 1950) (8) All Destroyed Traverse (9) All Destroyed Benchmarks (10)