Clearing ground and making camp on the Mexican border
MLA
Horne, Walter H., 1883-1921. Clearing ground and making camp on the Mexican border. Folder 5. https://collections.library.yale.edu/catalog/2015386.
APA, 6th edition
Horne, Walter H., 1883-1921. (["Folder 5"])[Clearing ground and making camp on the Mexican border]. https://collections.library.yale.edu/catalog/2015386.