Reconnaissance of the Western Coast of The United States From Monterey to the Columbia River in three sheets $50 and Under It was the longest artificial

It was the longest artificial waterway and the greatest public works project in North America

This map shows the triangulation mapping for France's meridians and baselines (perpendiculars)

The map shows many place names

there is a secondary title in French across the top just outside of the neatline

parts of the Potomac (including an inset chart showing Washington D

Reconnaissance of the Western Coast of The United States From Monterey to the Columbia River in three sheets $50 and Under It was the longest artificialThe second edition of the 1850 chart set of the California coastline. The full set charts from Monterey to the Columbia River. Sheet 1 is the southernmost that charts from Monterey to Cape Mendocino and includes 2 elevation views of the Entrance to San Francisco Bay and Cape Mendocino. Sheet 2 is the central sheet that charts from Cape Mendocino to the Umpqua River and includes 2 elevation views of Trinidad Head and Cape Mendocino. Sheet 3 is the