Medicinal plant map of US 1932

Medicinal plant map of the United States of America. Published by the National Wholesale Druggists’ Association

The David Rumsey Map Collection has made this map, small version shown, available in many sizes, spend some time wandering around the Extra-extra large one on their site.

If you browse the collections you’ll find several maps of trees, forests, agriculture, climate, and things of interest for gardeners and non-gardeners.