This is the Clarkson Lake Survey map of Lake Helane

Chicago citation style
Clarkson Map Co. This is the Clarkson Lake Survey map of Lake Helane. 19??. Retrieved from the Digital Public Library of America, http://collections.lib.uwm.edu/cdm/ref/collection/agdm/id/7511. (Accessed March 29, 2024.)
APA citation style
Clarkson Map Co, (19??) This is the Clarkson Lake Survey map of Lake Helane. Retrieved from the Digital Public Library of America, http://collections.lib.uwm.edu/cdm/ref/collection/agdm/id/7511
MLA citation style
Clarkson Map Co. Retrieved from the Digital Public Library of America <http://collections.lib.uwm.edu/cdm/ref/collection/agdm/id/7511>.
Note: These citations are programmatically generated and may be incomplete.