Fort Morgan

1971

1:24k

Fort Morgan

1951

1:24k

Fort Morgan

1951

1:24k

Fort Morgan

1951

1:24k

Fort Morgan

1980

1:100k

Sterling

1958

1:250k

Sterling

1954

1:250k

Sterling

1954

1:250k

Sterling

1954

1:250k

Denver

1950

USAF

1:500k