Hoosac Mountain, the site of a pendulum gravity station. Charles S. Peirceconducted operations here in 1873. This is a unique representation of an area bythe Coast Survey showing the topography for a two-mile radius around the gravity station. W. E
4/3/2019 11:57:55 AM
Date: 1873
Location: Massachusetts, Hoosac Mountain
Subject: Coast and Geodetic Survey