Geological Chart 5x7 Postcard

Geological Chart | 1893

American Artist Levi Walter Yaggy created this chart as both an artistic work and educational tool. It’s a prime example of a 19th-century technique called chromolithography, which allows for vivid color reproduction.

It depicts a cross-section of the geological layers of the Earth, with each distinct color representing the rock formations and historical periods that bright Yaggy to his present day. This postcard is a m useum reproduction sourced from the archives of the David Rumsey Historical Map Collection.