MLA

Crawford, Jack Randall, 1878-. Theatre Royal. Box 8, folder 47-50. 1809-1853. https://collections.library.yale.edu/catalog/10014277.

APA, 6th edition

Crawford, Jack Randall, 1878-. (["Box 8, folder 47-50"])(1809-1853)[Theatre Royal]. https://collections.library.yale.edu/catalog/10014277.