Cite

At Lambert Field in St. Louis, Missouri

MLA

Lindbergh, Charles A. (Charles Augustus), 1902-1974. At Lambert Field in St. Louis, Missouri. Box 4, folder 18. 1927 May 12. https://collections.library.yale.edu/catalog/10011483.

APA, 6th edition

Lindbergh, Charles A. (Charles Augustus), 1902-1974. (["Box 4, folder 18"])(1927 May 12)[At Lambert Field in St. Louis, Missouri]. https://collections.library.yale.edu/catalog/10011483.