Blake, William P. (William Phipps), 1826-19101 map : color ; 49 x 71 cm"From sources mentioned in the text.""Lith. by J. Bien, N.Y."Pl. xii-Pl. xiv.JPEGG 3701 .C5 1874 .H500086173739015091195225engPublicGeological map of the United StatesMapsUnited StatesUniversity of Michigan