Illinois State Geological Survey Historic Images Collection Photograph 0630A Grundy County IL
Dates
Dataset Reference Date
2017-11-16
Info Date
1919-06-21
Summary
Photograph Subject: "Cone-in-cone" structure in shales of Penn. Series Mazon R. just above Johnny Run M8 q22 County: Grundy State: IL Author: Culver,H. E. Volume: 0601 Format: Negative Ref ID: 0630A
Summary
Photograph Subject: "Cone-in-cone" structure in shales of Penn. Series Mazon R. just above Johnny Run M8 q22 County: Grundy State: IL Author: Culver,H. E. Volume: 0601 Format: Negative Ref ID: 0630A