Geologic quadrangle maps of United States. Mount Toby quadrangle, Mass., lat. 42°22′30″-42°30′, long. 72°30′-72°37′30″, surficial geology [with text]; by Richard H. Jahns. Topography by A. J. Ogle, B. P. Taylor, C. D. Mitchell and J. G. Groninger, surveyed in 1935, mapped in 1941, geologic cartography by Porter L. Mattox. Scale 1 m.=2 in., scale 1:31,680, contour interval 10 ft.