Cite

At Belle Island and Lake Ruth, Minnesota

MLA

Lindbergh, Charles A. (Charles Augustus), 1902-1974. At Belle Island and Lake Ruth, Minnesota. Box 2, folder 10. Circa 1908. https://collections.library.yale.edu/catalog/10011319.

APA, 6th edition

Lindbergh, Charles A. (Charles Augustus), 1902-1974. (["Box 2, folder 10"])(Circa 1908)[At Belle Island and Lake Ruth, Minnesota]. https://collections.library.yale.edu/catalog/10011319.