Surficial Geology of the Chicago Region: Steger and Dyer Quadrangles

Dyer SG map
Description: 

Map from Bulletin 65: Geology of the Chicago Region: Part II, The Pleistocene, 24 maps, 1:24,000. (Part I not available online)

Year: 
1939
Series ID: 
Bulletin 65, Maps 23 and 24
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