Map of the town of New Whatcom, Whatcom Co. Wash. Terr./ E.C. Prather engr. ; I.A. Lefevre del.
MLA
Cornwall, Pierre Barlow, 1821-1904. Map of the town of New Whatcom, Whatcom Co. Wash. Terr./ E.C. Prather engr. ; I.A. Lefevre del.. BRBL_00626. 1883. https://collections.library.yale.edu/catalog/15821646.
APA, 6th edition
Cornwall, Pierre Barlow, 1821-1904. (["BRBL_00626"])(1883)[Map of the town of New Whatcom, Whatcom Co. Wash. Terr./ E.C. Prather engr. ; I.A. Lefevre del.]. https://collections.library.yale.edu/catalog/15821646.