Title: Outline Map of North America with Sections Illustrating the Comparative Thickness of the Cambrian in Different Provinces (1890)
Author: C. D. Walcott
Publisher: U. S. Geological Survey
Publication Date: 1890
Type: Map
Condition: Very Good
Notes: Original colored geological map from 1890. Image dimensions (12" x 8.75"): center fold; edges smooth; no chips or tears . Rare. Numerous antique maps listed and available. Additional photos available upon request. All items carefully packed to avoid damage from moisture and rough handling. Sku: 021623