This is Throwback Thursday #147.  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 – February 1998

• The ESCONI show was held on February 28th and March 1st.
• James A. Marshall spoke at the General Meeting.  His topic was surveying and mapping prehistoric earthwork construction sites in Ohio and the South.
• Dave Bergmann, Field Trip Chairman, was working on a joint trip with the Detroit Rock Club to collect Celestite amd Sulfur.
• The newsletter had an announcement that Fred Labahn died in December 1997.  He was a member of ESCONI from 1962 and served as president in 1975-76.
• Dino News had segments on Giganotosaurus, Argentinosaurus, and Seismosaurus.

50 Years Ago – February 1973

• The General Meeting was “Minerals in Daily Use” by Mrs. Dorothy Schnizlein.
• The Mineralogy Study Group was discussing radioactivity.
• Lapidary had a demonstration of “Steam Casting”.  Florence Stuff and Betty Williamson were the demonstrators.
• The paleontology of Grant County, Wisconsin was the subject of the Paleontology Study Group Meeting.  Ordovician brachiopods and arthropods were on display.
• There was an indoor Pocket Swap in Mayslake Village on February 3rd.  Participants were instructed to bring their prized specimens to show off.

70 Years Ago – February 1953

• The General Meeting was given by Tom Ludlow of Johns-Manville Company about the development and usage of Diatomaceous deposits.  He had a sound and color film!
• The newsletter had an article on the Marquette Iron Range in the Upper Peninsula of Michigan.  
• ESCONI meetings were featuring a Swap Table at the time and Bill Allaway was hoping for some Rubies.