Large base map printed in light blue showing the extent of triangulation along the California Coast and eastward into Nevada during the year ending in June 30th, 1893.
Triangulation in California, 1893
Chart 5. Triangulation. 1893.
Large base map printed in light blue showing the extent of triangulation along the California Coast and eastward into Nevada during the year ending in June 30th, 1893.
Chart 5. Triangulation. 1893.