Sketch J Showing the Progress of the Survey on the Western Coast of the United States Sections X & XI From 1850 to 1854 Americas Mayland while occupied by the

Mayland while occupied by the rebels

Source: La geografia a colpo d'occhio: ossia primarie nozioni di geografia storica e statistica

A very nice detailed chart of Gloucester Harbor

and a note by an area called "The Quicksands" that reads "an extensive and very dangerous bank

and national security

Sketch J Showing the Progress of the Survey on the Western Coast of the United States Sections X & XI From 1850 to 1854 Americas Mayland while occupied by theTriangulation chart showing the progress of the survey from Monterey Bay to the Bay of San Francsico and San Pablo Bay. There is a primary chart that shows many locations and stations along with survey sheet boundaries and dates. Inset triangulation and survey progess maps of San Diego, Columbia River, Strait of Rosario (San Juan Islands and Puget Sound), San Pedro, and the entire Western Coast are included on the sheet. Pregoress notes and other