Geologic quadrangle map of United States [Issued in two forms, flat, for filing in large map cases, and folded, for convenience in filing and for use in the field.]. Mount Grace quadrangle, Mass., lat. 42°37'30"-42°45', long. 72°15-72°22'30", surficial geology [with text]; by Jarvis B. Hadley. Scale 1: 31,680, contour interval 10 ft.

Tools