Milford, Hollis, Hillsborough.

1892

D.H. Hurd & Co.

Groton quadrangle, Massachusetts

1893

Geological Survey (U.S.)

1:63k

22. Groton sheet.

1890

Massachusetts. Topographical Survey Commission

1:63k

Greenville & Mason, Hillsborough County.

1892

D.H. Hurd & Co.

1:29k

Hillsborough County.

1892

D.H. Hurd & Co.

1:127k

Hillsborough (County), (New Hampshire).

1877

Hitchcock, C.H.

Fitchburg quadrangle, Massachusetts

1893

Geological Survey (U.S.)

1:63k

Pepperell

1942

1:32k

Rockingham (County), (New Hampshire).

1877

Hitchcock, C.H.

Cheshire (County), (New Hampshire).

1877

Hitchcock, C.H.