By reef and palm,

Mode of access: Internet.

Handbook of the trees of the northern states and Canada east of the Rocky mountains. Photo-descriptive.

Mode of access: Internet.

Rocky Mountain National Park, Colorado ... Report.

Submitted by Mr. Taylor. Ordered printed January 12, 1915.

Study of the rocky intertidal communities of central and northern California : years III and IV /

"Contract no. 14-12-0001-30057."

Astoria : or, Enterprise beyond the Rocky Mountains /

Includes advertising matter.

Mining and mineral operations in the Rocky Mountain States : a visitor guide /

"Special publication."

Study of the rocky intertidal communities of central and northern California : year II /

Mode of access: Internet.

Hydrology of area 52, Rocky Mountain coal province Wyoming, Colorado, Idaho, and Utah /

Mode of access: Internet.

Hydrology of area 48, northern Great Plains and Rocky Mountain coal provinces, Montana and Wyoming /

Mode of access: Internet.

Statistics of mines and mining in the states and territories west of the Rocky Mountains; being the [1st-8th] annual report of Rossiter W. Raymond, U.S. commissioner of mining statistics

8th, 1875, 44th Cong., 1st sess., House ex. doc. no. 159