Picture 6/30: 1976 Geology

June 30
(year 4, picture 181)

Came across this piece of history for a steal out on eBay:


Dated 1976.

It was fascinating to read thru.

Lots of great stats and history on Central Illinois.  Including this:


Look at them trajectories!

My how those have leveled-out over the last 20 years.

Out for now........

Matt

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