MLA

Lord, James, 1922-2009. Alberto Giacometti to James Lord. Box 9, folder 88. 1962-1965. https://collections.library.yale.edu/catalog/16622483.

APA, 6th edition

Lord, James, 1922-2009. (["Box 9, folder 88"])(1962-1965)[Alberto Giacometti to James Lord]. https://collections.library.yale.edu/catalog/16622483.