UNITED STATES
GEOLOGICAL SURVEY
(South Dakota)

Black Hills Forest Reserve
Boundary Monuments


The survey for the boundary of the Black Hills Forest Reserve, in South Dakota and Wyoming, commenced on July 1, 1899, by Mr. William H. Thorn, United States surveyor. During the field season he surveyed and marked 217 miles of line.


POST 1
POST 22
POST 96
POST 140
POST 188








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© Jerry Penry 2015