Map of Worcester county, Mass. ... from accurat surveys under the direction of Henry F. Walling ... 1857..
MLA
Map of Worcester County, Mass. ... from Accurat Surveys under the Direction of Henry F. Walling ... 1857.. Wm. E. Baker & Co., 1857. https://collections.library.yale.edu/catalog/15654658.
APA, 6th edition
Map of Worcester county, Mass. ... from accurat surveys under the direction of Henry F. Walling ... 1857.. (1857). [Maps]. Wm. E. Baker & Co., https://collections.library.yale.edu/catalog/15654658.