MLA

Lindbergh, Charles A. (Charles Augustus), 1902-1974. At air display and with Raymond Orteig. Box 5, folder 19. 1927 May 24. https://collections.library.yale.edu/catalog/10013108.

APA, 6th edition

Lindbergh, Charles A. (Charles Augustus), 1902-1974. (["Box 5, folder 19"])(1927 May 24)[At air display and with Raymond Orteig]. https://collections.library.yale.edu/catalog/10013108.