F878c. Views From Trail to Sperry Glacier.
MLA
McClintock, Walter, 1870-1949. F878c. Views From Trail to Sperry Glacier.. Box 140, folder 6923. 1908. https://collections.library.yale.edu/catalog/10452610.
APA, 6th edition
McClintock, Walter, 1870-1949. (["Box 140, folder 6923"])(1908)[F878c. Views From Trail to Sperry Glacier.]. https://collections.library.yale.edu/catalog/10452610.