Cite

Engraving plate, with drawing of EW and music for "O Canada"

MLA

Wilson, Edmund, 1895-1972. Engraving plate, with drawing of EW and music for "O Canada". Box 199, folder 4841. n.d.. https://collections.library.yale.edu/catalog/2005100.

APA, 6th edition

Wilson, Edmund, 1895-1972. (["Box 199, folder 4841"])(n.d.)[Engraving plate, with drawing of EW and music for "O Canada"]. https://collections.library.yale.edu/catalog/2005100.