Cite

Plan of survey of the silver mining district, Thunder Bay, Lake Superior, Canada / compiled by Hugh P. Savigny, P.L.S.

MLA

Savigny, Hugh P. Plan of Survey of the Silver Mining District, Thunder Bay, Lake Superior, Canada / Compiled by Hugh P. Savigny, P.L.S. [publisher not identified], 0AD. https://collections.library.yale.edu/catalog/16664852.

APA, 6th edition

Savigny, H. P. (0 C.E.). Plan of survey of the silver mining district, Thunder Bay, Lake Superior, Canada / compiled by Hugh P. Savigny, P.L.S. [Annotations (Provenance)--19th century, Cadastral maps]. [publisher not identified], https://collections.library.yale.edu/catalog/16664852.