Ralph W. Woodworth checking tide gauge in Boston Harbor.Tides party of R. W. Woodworth.From article in Christian Science Monitor, July 23, 1926
3/20/2019 1:53:43 PM
Date: 1926
Credit: Family of Captain George L. Anderson, C&GS;
Location: Massachusetts, Boston
Subject: Charting
Subject: Tides
Subject: Gauge
Subject: Checking