North-western Colorado and part of Utah.

1881

Hayden, F.V.

1:253k

Composite: Colorado. XI-XVI.

1881

Hayden, F.V.

1:253k

Colorado.

1878

Cram, George Franklin

Colorado.

1879

Rand McNally and Company

1:2m

Colorado.

1909

Cram, George Franklin; Davis, Ellis Arthur

1:2m

Colorado.

1884

Mitchell, Samuel Augustus Jr.

1:2m

Colorado. 1881

1881

Page, H.R. & Co.

1:2m

Rand McNally & Co.'s new geological map of Colorado

1880

Rand, McNally

1:800k

Rand, McNally & Co.'s new geological map of Colorado.

1879

Rand McNally and Company

1:760k

Colorado.

1880

Page, H.R. & Co.