MLA

Lindbergh, Charles A. (Charles Augustus), 1902-1974. Portraits. Box 66, folder 1-6. Circa 1920-1955, 1977. https://collections.library.yale.edu/catalog/10015317.

APA, 6th edition

Lindbergh, Charles A. (Charles Augustus), 1902-1974. (["Box 66, folder 1-6"])(Circa 1920-1955, 1977)[Portraits]. https://collections.library.yale.edu/catalog/10015317.