22. Groton sheet.

1890

Massachusetts. Topographical Survey Commission

1:63k

Brookline, Hillsborough Co.

1892

D.H. Hurd & Co.

1:28k

Massachusetts. Atlas Plate No. 18.

1891

Walker, O.W.

1:63k

Groton quadrangle, Massachusetts

1893

Geological Survey (U.S.)

1:63k

Ashby

1944

1:32k

Fitchburg quadrangle, Massachusetts

1893

Geological Survey (U.S.)

1:63k

Worcester County.

1871

Gray, Ormando Willis; Walling, H. F.

1:158k

Middlesex County.

1871

Gray, Ormando Willis; Walling, H. F.

1:158k

19. Fitchburg sheet.

1890

Massachusetts. Topographical Survey Commission

1:63k

Sheet 2. Scarborough's Complete Road Atlas of Massachusetts and Rhode Island.

1905

Scarborough Company

1:127k