MLA

Lindbergh, Charles A. (Charles Augustus), 1902-1974. Reeve Morrow Lindbergh with Anne Morrow Lindbergh, Jon Morrow Lindbergh, and Elizabeth Cutter Morrow (portraits). Box 67, folder 4. 1948. https://collections.library.yale.edu/catalog/10011564.

APA, 6th edition

Lindbergh, Charles A. (Charles Augustus), 1902-1974. (["Box 67, folder 4"])(1948)[Reeve Morrow Lindbergh with Anne Morrow Lindbergh, Jon Morrow Lindbergh, and Elizabeth Cutter Morrow (portraits)]. https://collections.library.yale.edu/catalog/10011564.