"East and West Section Across Massachusetts", 1828-1840, 302 x 58 cm., Pen and ink on linen Image courtesy of Edward and Orra White Hitchcock Papers, Amherst College Archives and Special Collections, Amherst College Library.
This illustration shows in cross-section the types of rock that can be found in Massachusetts. The illustration reads from the New York/Massachusetts state line at the far left, to Cape Cod on the right.