Sketch J No. 6 Showing the Progress of the Survey of San Francisco Bay and Vicinity Section X 1850 to 1853 Plate Most others you typically see

Most others you typically see on eBay have not been

A superbly detailed bird's-eye view map of San Francisco as it was in 1854

common roads

Cape Romano

and Delaware River through New Jersey

Sketch J No. 6 Showing the Progress of the Survey of San Francisco Bay and Vicinity Section X 1850 to 1853 Plate Most others you typically seeThis map has two Triangulation progress survey charts on one sheet. One chart is of the Bay of San Diego from the U. S. boundary line, to Point Loma and the interior of Bay of San Diego. Shows many base stations, points and astronomical stations. The second chart is a Triangulation progress survey chart of the Bay of San Francisco from Farallon Islands into the bay. Shows many base stations, points and astronomical stations. IMPORTANT NOTE: All of our