A few nice Rocky Mountains images I found:

Close in view, dark shadowed hills in foreground, mountains in background, “Long’s Peak, Rocky Mountain National Park,” Colorado.
Rocky Mountains
Image by The U.S. National Archives
Original Caption: Close in view, dark shadowed hills in foreground, mountains in background, "Long’s Peak, Rocky Mountain National Park," Colorado.

U.S. National Archives’ Local Identifier: 79-AA-M10

From: Series: Ansel Adams Photographs of National Parks and Monuments, compiled 1941 – 1942, documenting the period ca. 1933 – 1942

Created By: Department of the Interior. National Park Service. Branch of Still and Motion Pictures.

Photographer: Adams, Ansel, 1902-1984

Coverage Dates: 1933-1942

Subjects: Parks, Monuments

Persistent URL: arcweb.archives.gov/arc/action/ExternalIdSearch?id=519963

Repository: Still Picture Records Section, Special Media Archives Services Division (NWCS-S), National Archives at College Park, 8601 Adelphi Road, College Park, MD, 20740-6001.

For information about ordering reproductions of photographs held by the Still Picture Unit, visit: www.archives.gov/research/order/still-pictures.html

Access Restrictions: Unrestricted
Use Restrictions: Unrestricted

Rocky Mountain National Park
Rocky Mountains
Image by Jasperdo
Along Beaver Pond Boardwalk Trail

View of plateau, snow covered mountain in background, “Long’s Peak, Rocky Mountain National Park,” Colorado.
Rocky Mountains
Image by The U.S. National Archives
Original Caption: View of plateau, snow covered mountain in background, "Long’s Peak, Rocky Mountain National Park," Colorado.

U.S. National Archives’ Local Identifier: 79-AA-M17

From: Series: Ansel Adams Photographs of National Parks and Monuments, compiled 1941 – 1942, documenting the period ca. 1933 – 1942

Created By: Department of the Interior. National Park Service. Branch of Still and Motion Pictures.

Photographer: Adams, Ansel, 1902-1984

Coverage Dates: 1933-1942

Subjects: Parks, Monuments

Persistent URL: arcweb.archives.gov/arc/action/ExternalIdSearch?id=519970

Repository: Still Picture Records Section, Special Media Archives Services Division (NWCS-S), National Archives at College Park, 8601 Adelphi Road, College Park, MD, 20740-6001.

For information about ordering reproductions of photographs held by the Still Picture Unit, visit: www.archives.gov/research/order/still-pictures.html

Access Restrictions: Unrestricted
Use Restrictions: Unrestricted