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