Rio Colorado Geologic 1858 Map Frame:Black Our map depicts every river

Our map depicts every river in the province—even intermittent streams—and every body of water with a diameter greater than

Principal Draughtsman G

Explore the diverse and beautiful terrain of Pennsylvania and all of its distinctive character revealed within the detail of this relief map

or Humphrey's Grasshopper

Rio Colorado Geologic 1858 Map Frame:Black Our map depicts every riverThis beautiful map was the result of an exploration under the direction of the Office of Explorations and Surveys headed by 1st. Lieut. Joseph C. Ives in 1858. The map was drawn by Frhr. F. W. v. Egloffstein, the topographer to the expedition, who used a unique engraving process that resulted in the stunning rendering of the topographic features.