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
Plan (alternate image)
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.
Creator:
McCorkle, Spencer C.
Date Created:
1885
Physical Format:
31 x 36 in.
Coverage:
Philadelphia and vicinity
Identifier:
RC-Q-03
Media:
Tracing
Map Features:
Location of triangulation points used to create accurate surveys
Scale:
1:20000, or 1 inch = 1666 feet
Image Note:
The colors in this image may have been adjusted to enhance legibility, and may not accurately reflect the original item.
Source:
Image File(s)
RC-Q-03