Collection Hotchkiss Map Collection
Relief shown by hachures. LC Civil War maps (2nd ed.), H218 Available also through the Library of Congress web site as raster image. LC copy: Extensive ink, pencil, and annotations with watercolor showing the different types of geological formations. LC copy: Title in ms. in lower left. In pencil on verso: 183.
- Contributor: Rogers, William Barton - Guyot, A. (arnold)
- Date: 187?