Plate IV - The first triangulation work of the United States Coast Survey

Plate IV - The first triangulation work of the United States Coast Survey. In: Papers on various subjects connected with the survey of the coast of the United States” by Ferdinand Hassler. Communicated March 3, 1820. Published in :Transactions of the American Philosophical Society, vol. 2, n. ser. 1825. Pp. 232-420. Library Call Number QB281.2 .H28 1825.

Photo Category: Treasure - Geodesy