1652A third mill was built in 1652 at Saw Mill Dam, Riverdale.Economy and Industry, Industry

The third mill met demands until 1677, when a town meeting was called to erect a larger corn mill at the Saw Mill Dam spot.
Babson, Roger, and Foster H. Saville. Cape Ann Tourist’s Guide. Cape Ann Community League, Inc., 1952. Gloucester Town Records, 1642-1715. Vol. 1. Gloucester, Mass., 1715, https://archive.org/details/GLOTownRecords16921715Images/page/n53/mode/2up?view=theater