Calisphere: University of California Libraries
University of California: Calisphere: Gold Rush Era: Everyday Life and People
A collection of primary source photos from 19th-century California which portray what everyday life was like during the California Gold Rush.
Other
U.s. Genealogy Map Project: u.s. Border/land Claims 1804 1823
A great map and a list of the acquisitions and border changes of the United States from 1804 to 1823. A concise resource showing Western expansion.