Cite

[Postcard : 1950 January 29, to Langston Hughes]

MLA

[Postcard : 1950 January 29, to Langston Hughes]. 1950. https://collections.library.yale.edu/catalog/10599425.

APA, 6th edition

[Postcard : 1950 January 29, to Langston Hughes]. (1950). [Correspondence, Postcards]. https://collections.library.yale.edu/catalog/10599425.