These maps are part of USGS Topographical Maps made since 1882. They’ve been broken down into quadrangle’s to make viewing them easier. We have digital copies of three different series for the Ayer, Massachusetts Quadrangle. The first surveyed in 1923 and 1935, and published in 1939, and then a partial revision surveyed in 1944 and printed in 1945; and then a final revision in 1950, and published in 1951. For information about these maps see Historic USGS Topographical Maps.
1939 Ayer, Massachusetts Quadrangle Historic USGS map
Surveyed 1923, 1935.
1945 Ayer, Massachusetts Quadrangle Historic USGS map
Surveyed 1923, 1935, and revised 1944.
1951 Ayer, Massachusetts Quadrangle Historic USGS map
Surveyed 1923, 1935, 1944, and revised 1950.
Adjacent USGS 7.5 Minute Series Quadrangles
Ayer
Clinton
Hudson
Maynard
Pepperell
Shirley
Townsend
Tyngsboro
Westford
USGS 15 Minute Series Quadrangle Covering this Area
Groton
Towns Covered By this Quadrangle
Ayer
Boxboro
Groton
Harvard
Littleton
Shirley