Cite

Massachusetts atlas plate no. 26.

MLA

Walker, Geo. H., and Co. Massachusetts Atlas Plate No. 26. Geo. H. Walker & Co., 0AD. https://collections.library.yale.edu/catalog/15639979.

APA, 6th edition

Walker, G. H., & C. (0 C.E.). Massachusetts atlas plate no. 26. [Maps]. Geo. H. Walker & Co., https://collections.library.yale.edu/catalog/15639979.