mapsMaps ETC Site map
 Maps ETC > United States > Pennsylvania > Preglacial Drainage of Western Pennsylvania,
Site Map 

Preglacial Drainage of Western Pennsylvania,



Title: Preglacial Drainage of Western Pennsylvania
Projection: Unknown,
Source Bounding Coordinates:
W: -80 E: -80 N: 40 S: 40

Back to Map Page
Description: A map showing the probable preglacial drainage of western Pennsylvania, the limit of glaciation is shown by the broken crossed line.
Source: Isaiah Bowman, Ph. D, Forest Physiography (New York, NY: John Wiley and Sons, 1911) 599
Map Credit: The Private Collection of Roy Winkelman
SearchLicensePDF HelpGIS Help Google Earth Help Zoomify Help

 Maps ETC > United States > Pennsylvania > Preglacial Drainage of Western Pennsylvania,
Site Map