MLA

McClintock, Walter, 1870-1949. F6889. After Blizzard. Clouds Rising From Mountains. Looking West Through Timber.. Box 138, folder 6595. 1906 Fall. https://collections.library.yale.edu/catalog/10452281.

APA, 6th edition

McClintock, Walter, 1870-1949. (["Box 138, folder 6595"])(1906 Fall)[F6889. After Blizzard. Clouds Rising From Mountains. Looking West Through Timber.]. https://collections.library.yale.edu/catalog/10452281.