Cite

[de Castro]: autograph note signed

MLA

Dobson, Austin, 1840-1921. [de Castro]: autograph note signed. Box 10. 1916 September 19. https://collections.library.yale.edu/catalog/17298305.

APA, 6th edition

Dobson, Austin, 1840-1921. (["Box 10"])(1916 September 19)[[de Castro]: autograph note signed]. https://collections.library.yale.edu/catalog/17298305.