REFINE
Browse All : Images by Evans, John and Ackerman Lith. of Wisconsin and Lake Superior
1-1 of 1
Author
Owen, David Dale
Note
Hand colored geological map. Shows geological formations via hand coloring. It also shows the Iowa coal-field extending into northern Missouri and part of the Illinois coal-field. There is excellent detail of watershed and lakes throughout. Includes Table showing geological formation by color.
1-1 of 1
|