Digital Commonwealth

MLA

Bache, A. D. (Alexander Dallas), and United States Coast Survey. Boston Harbor, Massachusetts. Washington, D.C.: U.S. Coast Survey Office, 1863. Web. 15 Feb 2019. <https://ark.digitalcommonwealth.org/ark:/50959/x633fb29b>.

APA

Bache, A., & United States Coast Survey. (1863). Boston Harbor, Massachusetts [Map]. Retrieved from https://ark.digitalcommonwealth.org/ark:/50959/x633fb29b

Chicago

Bache, A. D. (Alexander Dallas), and United States Coast Survey. "Boston Harbor, Massachusetts." Map. Washington, D.C.: U.S. Coast Survey Office, 1863. Digital Commonwealth, https://ark.digitalcommonwealth.org/ark:/50959/x633fb29b (accessed February 15, 2019).