UNITED STATES
GEOLOGICAL SURVEY
(South Dakota)

Early U.S. Geological Survey Monuments
Black Hills Region


1893 TRIANGULATION
STATIONS
1897 TRIANGULATION
STATIONS
DEADWOOD DATUM
BENCH MARKS
WIND CAVE
MONUMENTS
BLACK HILLS FOREST
BOUNDARY POSTS
TOWNSHIP
CORNERS
MERIDIAN
LINES


Notes
SPIRIT LEVELING
SOUTH DAKOTA
1896-1910








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