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1881

North-western Colorado and part of Utah.

State Atlas

North-western Colorado and part of Utah. …

1881

Northern Central Colorado.

State Atlas

Northern Central Colorado. U.S. Geologic …

1881

Central Colorado.

State Atlas

Central Colorado. U.S. Geological and Ge …

1881

Western Colorado and Part of Utah.

State Atlas

Western Colorado and Part of Utah. U.S. …

1881

Composite: Colorado. XI-XVI.

State Atlas

(Composite of) Colorado. Sheets XI-XVI. …

1878

Geological Map of Portions of Wyoming, I …

Separate Map

Geological Map of Portions of Wyoming, I …

1877

Parts of Western Wyoming, Southeastern I …

Separate Map

Parts of Western Wyoming, Southeastern I …