Cite

Johnson's map of the vicinity of Richmond and peninsular campaing in Virginia ... By Johnson and Ward.

MLA

Johnson's Map of the Vicinity of Richmond and Peninsular Campaing in Virginia ... By Johnson and Ward. 0AD. https://collections.library.yale.edu/catalog/15811276.

APA, 6th edition

Johnson's map of the vicinity of Richmond and peninsular campaing in Virginia ... By Johnson and Ward. (0 C.E.). [Maps]. https://collections.library.yale.edu/catalog/15811276.