"Geological Map of Maine. Colored to Show the Geological Formations", Hitchcock, Charles Henry
Period: 1887 (dated)
Publication: Atlas of the State of Maine
Color: Hand Color
12.5 x 15.8 inches
31.8 x 40.1 cm
This striking geological map of the state is divided into counties and names some towns and rivers. Its color-coded key identifies granite, trap and altered slates, upper silurian, montalban, and other geologic units. Published in George N. Colby's atlas of the state.
On a lightly toned sheet with an edge tear at left that extends 1" into the image and has been closed on verso with archival tape.