Cite

Copper lands of St. Mary's Canal Mineral Land Co. shaded red.

MLA

Copper Lands of St. Mary's Canal Mineral Land Co. Shaded Red. [publisher not identified], , 0AD. https://collections.library.yale.edu/catalog/16680803.

APA, 6th edition

Copper lands of St. Mary's Canal Mineral Land Co. shaded red. (0 C.E.). [Annotations (Provenance)--20th century, Cadastral maps]. [publisher not identified], . https://collections.library.yale.edu/catalog/16680803.