Cite

Halford, Henry, Sir, to Peter Parker

MLA

Parker, Peter, 1804-1888. Halford, Henry, Sir, to Peter Parker. 1841 June. https://collections.library.yale.edu/catalog/16808632.

APA, 6th edition

Parker, Peter, 1804-1888. (1841 June)[Halford, Henry, Sir, to Peter Parker]. https://collections.library.yale.edu/catalog/16808632.