Ayer, MA Quadrangle home USGS 7.5 Minute Series Latitude: 42.5625 N   Longitude: 71.5625 W

1939 Northwest (jpeg 1.8 MB) Northeast (jpeg 2 MB) Southwest (jpeg 1.8 MB) Southeast (jpeg 1.6 MB) Surveyed 1923, 1935

1939 Northwest (jpeg 2 MB) Northeast (jpeg 2.1 MB) Southwest (jpeg 1.9 MB) Southeast (jpeg 1.9 MB) Reprinted 1945, Surveyed 1923, 1935, 1944 (revised)

1939 Northwest (jpeg 2 MB) Northeast (jpeg 2.1 MB) Southwest (jpeg 2 MB) Southeast (jpeg 1.9 MB) Reprinted 1951, Surveyed 1923, 1935, 1944 (revised), 1950 (revised)

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Adjacent USGS 7.5 Minute Series Quadrangles Townsend Pepperell Tyngsboro Shirley Ayer Westford Clinton Hudson Maynard

USGS 15 Minute Series Quadrangles Covering this Area Groton

Towns Covered By This Quadrangle Ayer, MA Boxboro, MA Groton, MA Harvard, MA Littleton, MA Shirley, MA