GeoHistory Resources |
Triangulation, City of Philadelphia. U.S. Coast and Geodetic Survey, J. E. Hilgard, Supt. Observations made by C. H. VanOrden, Assistant, C. H. Sinclair, Assistant, under the direction of Spencer McCorkle, Assistant. , 1885PlanWork Title:
Triangulation, City of Philadelphia. U.S. Coast and Geodetic Survey, J. E. Hilgard, Supt. Observations made by C. H. VanOrden, Assistant, C. H. Sinclair, Assistant, under the direction of Spencer McCorkle, Assistant. , 1885
Surveyor:
McCorkle, Spencer C.
Date:
1885
Size:
31 x 36 in.
Map Features:
Location of triangulation points used to create accurate surveys
Media:
Tracing
Scale:
1:20000, or 1 inch = 1666 feet
Source:
Image File(s):
RC-Q-03
|
|