Cite

Parkes, Harry, to Peter Parker

MLA

Parker, Peter, 1804-1888. Parkes, Harry, to Peter Parker. 1856 February 26. https://collections.library.yale.edu/catalog/16808659.

APA, 6th edition

Parker, Peter, 1804-1888. (1856 February 26)[Parkes, Harry, to Peter Parker]. https://collections.library.yale.edu/catalog/16808659.