Collection: Osher Collection
Name: United States of North America
Notes: A small color key is attached to this map showing the types of rock seen in the region, the same key is hand-written on the front of the map.
Date/Date Range Produced:
Date/Date Range Published:
Historical Context: This is a later copy of the first geological map of the United States with William Maclure's color references.
Accession Number: OS-1821-19