Atlas of the boundaries of the cities of Cambridge, Somerville, Waltham and towns of Belmont, Burlington, Lexington, Watertown, Middlesex County by 
A map of the original allotments of land and the ancient topography of Watertown proper by 
Map of the town of Watertown : Middlesex Co., Mass., from actual surveys by 
Map of Watertown compiled from former surveys by 
Watertown, Massachusetts zoning map
