Map of the survey of Wissahickon Creek from its mouth to Paul's Mill Road defining boundaries of land appropriated by the Commissioners of Fairmount Park: for the protection of the purity of the water of said creek and the preservation of the beauty of its scenery declared to be a part of Fairmount Park by act of the General Assembly of the Commonwealth of Pennsylvania approved the 14th day of April AD. 1868

Chicago citation style
Cressen, John C. Map of the survey of Wissahickon Creek from its mouth to Paul's Mill Road defining boundaries of land appropriated by the Commissioners of Fairmount Park: for the protection of the purity of the water of said creek and the preservation of the beauty of its scenery declared to be a part of Fairmount Park by act of the General Assembly of the Commonwealth of Pennsylvania approved the 14th day of April AD. 1868. 1869. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/4m90fd16x. (Accessed July 16, 2018.)
APA citation style
Cressen, John C, (1869) Map of the survey of Wissahickon Creek from its mouth to Paul's Mill Road defining boundaries of land appropriated by the Commissioners of Fairmount Park: for the protection of the purity of the water of said creek and the preservation of the beauty of its scenery declared to be a part of Fairmount Park by act of the General Assembly of the Commonwealth of Pennsylvania approved the 14th day of April AD. 1868. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/4m90fd16x
MLA citation style
Cressen, John C. Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/4m90fd16x>.
Note: These citations are programmatically generated and may be incomplete.