This is Throwback Thursday #113.  In these, we look back into the past at ESCONI specifically and Earth Science in general.  If you have any contributions, (science, pictures, stories, etc …), please send them to esconi.info@gmail.com.  Thanks!

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25 Years Ago – June 1997

• For June 7th and 8th, 1997, there was a field trip to the Cedar Rapids, IA area.
• The General Meeting was “The Scenic Geology of California” by Mark Sutherland.
• Mineralogy/Micromount discussed minerals of the Flambeau Mine in Ladysmith, Wisconsin.
• The Sullivan Springs archaeological site in Chicago was mentioned in the newsletter.  Back in 1965, some ESCONI members participated in research at the site.
• The MWF was looking for some cedar gavels given out to rock clubs in the the midwest.
• Ticks and Lyme Disease were a issue even back then… some tips from Cedar Valley Gems was posted in the newsletter.

50 Years Ago – June 1972

• Dr. Charles Shabica presented “Life & Death of the Mazon Creek Fossils” at the General Meeting.   It mostly concentrated on the stratigraphy of Pit 11.
• The Mineralogy Study Group discussed places to collect minerals during summer vacation season.
• “Those Full Moons May Be Murderous” was reprinted in the newsletter from the Chicago Daily News.
• ESCONI membership stood at 541!

70 Years Ago – June 1952

• The General Meeting was the annual social affair, where various members gave short talks which we carefully selected (selected for their brevity of speech).
• Quite a few books were added to the ESCONI library including a bunch from various geological surveys.  The US, Illinois, Missouri, and Iowa figured prominently.
• Jay Farr concluded his article “What Do Archaeologists Say About Civlization”.
• Stevens Norvell wrote about “Illinois’ Unusual Soil”.
• Mayan and Babylonian number symbols appeared in the newsletter… anyone fluent in base 20 or base 60?