This is Throwback Thursday #249. 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! email:esconi.info@gmail.com.
Here’s a handy index of our Throwback Thursday posts. This should make it easy to look up any posts.

- #1 – “If I Could Turn Back Time: ESCONI Rock Club” by Mary Fairchild – April 2nd, 2020
- #2 – Poem: Diamond in the Rough – April 9th, 2020
- #3 – Field Trip To Pint’s Quarry in Iowa, May 1977 – April 16th, 2020
- #4 – Field Trip To St. Paul Stone Co. on October 30th, 2010 – April 23, 2020
- #5 – ESCONI Juniors Booth at various ESCONI Shows – April 30th, 2020
- #6 – Field Trip To Lone Star Quarry, Oglesby, IL in 2008 – May 7th, 2020
- #7 – Scenes From the 1990 ESCONI Show – May 14th, 2020
- #8 – History on Parade: Grieger’s Was a Lapidary Legend – May 21st, 2020
- #9 – Field Trip To Larson Quarry in DeKalb, IL on September 19th, 2009 – May 28th, 2020
- #10 – What Do You Know About Joliet-Lemont Limestone? – June 4th, 2020
- #11 – Reflections on the Paleontology Study Group Meeing on April 18th, 2009 – June 11th, 2020
- #12 – George Langford Night on June 13th, 1958 – June 18th, 2020
- #13 – Field Museum Photo Archives – June 25th, 2020
- #14 – Geodes – July 2nd, 2020
- #15 – Poem: “The Ravin” from 1951 – July 9th, 2020
- #16 – Membership Dues in 1953 – July 16th, 2020
- #17 – Patches, Emblems, and Logos – July 23rd, 2020
- #18 – Field Trip To Galena, IL from August 8th-9th, 1959 – July 30th, 2020
- #19 – ESCONI Show 2009 – August 6th, 2020
- #20 – Rediscovering a Dinosaur Named Elmer – August 13th, 2020
- #21 – Field Trip To Rosiclare, IL for Fluorite on April 25th, 1959 – August 20th, 2020
- #22 – Field Trip To Lutz Quarry Near Oshkosh, WI in 1954 – August 27th, 2020
- #23 – History of Coal Mining in Illinois – September 3rd, 2020
- #24 – Coal Mining Around Coal City – September 10th, 2020
- #25 – Hunting Ghosts, Blobs, and Assorted Monsters in Illinois Coal Age Nodules – September 17th, 2020
- #26 – 1815 Eruption of Mount Tambora – September 24th, 2020
- #27 – Field Trip To Morris For Mazon Creek Fossils, September 1976 – October 1st, 2020
- #28 – Photos of Braidwood Coal Mining in 1960 – October 8th, 2020
- #29 – Best Fossil 2015 – October 15th, 2020
- #30 – Poem: Winters’s Field Trip – October 22nd, 2020
- #31 – The Nanotyrannus Find on the Burpee 2002 Montana Expedition – October 29th, 2020
- #32 – Field Trip To a Riverside, IL Quarry in 1959 – November 5th, 2020
- #33 – Field Trip To Sylvania, OH in 1959 – November 12th, 2020
- #34 – The 2010 ESCONI Show – November 19th, 2020
- #35 – Holiday Party 2018 With Dr. Peter Makovicky – December 3rd, 2020
- #36 – Poem: Fossil in the Crannied Wall – December 10th, 2020
- #37 – Revisiting the Field Trip To Pint’s Quarry in Raymond, IA on May 8th, 1977 – December 17th, 2020
- #38 – Merry Mazon Christmas From ESCONI – December 24th, 2020
- #39 – Poem: Paleontological Ditty – December 31st, 2020
- #40 – 25 and 50 Years Ago – January 7th, 2021
- #41 – Lemont Trilobites November 19th, 1950 – January 14th, 2021
- #42 – Poem: A Trilobite Tale – January 21st, 2021
- #43 – Poem: Description of a Rockhound – January 28th, 2021
- #44 – Commentary: Contributions by Amateur Paleotologists by John Catalani – February 4th, 2021
- #45 – Poem: Collecting Rocks – February 11th, 2021
- #46 – 25 and 50 Years Ago – February 18th, 2021
- #47 – Poem: The Rockhound’s Creed – February 25th, 2021
- #48 – Looking Back At ESCONI for March 2021 – March 4th, 2021
- #49 – 2011 ESCONI Show – March 11th, 2021
- #50 – Revisiting a Field Trip to Galena, IL August 8th-9th, 1959 – March 18th, 2021
- #51 – A Morris Field Trip On September 30th, 1954 – March 25th, 2021
- #52 – Field Trip List For 2002 – April 1st, 2021
- #53 – Looking Back At ESCONI for March 2021 – April 8th, 2021
- #54 – Poem: Better To Be a Rockhound – April 15th, 2021
- #55 – John and Lucy McLuckie – April 22nd, 2021
- #56 – Poem: ESCONI – April 29th, 2021
- #57 – Loch Ness Outdone: Rediscovery of the Coelacanth
- #58 – Looking Back At ESCONI for May 2021 – May 13th, 2021
- #59 – Poem: The Rock Pile – May 20th, 2021
- #60 – Mineral Quiz From November 1966 – May 27th, 2021
- #60 – Answers To the Mineral Quiz From November 1966 – May 29th, 2021
- #61 – Looking Back At ESCONI for June 2021 – June 3rd, 2021
- #62 – ESCONI Flea Market on October 2nd, 1999 – June 10th, 2021
- #63 – Field Trip To Lone Star Quarry on April 7th, 2002 – June 17th, 2021
- #64 – A Rockhound Spelling Test from November 1962 – June 24th, 2021
- #64 – Answers To the Rockhound Spelling Test from November 1962 – June 27th, 2021
- #65 – Poem: Rockhound’s Plight – July 1st, 2021
- #66 – Poem: It’s In the Bag – July 8th, 2021
- #67 – Looking Back At ESCONI for July 2021 – July 15th, 2021
- #68 – Field Museum Photo Archive – July 22nd, 2021
- #69 – The Benld Meteorite – July 29th, 2021
- #70 – They’re Selling What?!? – August 5th, 2021
- #71 – Poem: Sentimental – August 12th, 2021
- #72 – Bill Allaway Poem – August 19th, 2021
- #73 – Poem: The Rockhound’s Wish – August 26th, 2021
- #74 – This Week In Illinois History: The Tully Monster – September 2nd, 2021
- #75 – Looking Back At ESCONI for September 2021 – September 9th, 2021
- #76 – Poem: Rockhounds – September 16th, 2021
- #77 – “Brag Night” – September 23rd, 2024
- #78 – Revisiting an Indiana Field Trip May 4th-5th, 1957 – September 30th, 2021
- #79 – Looking Back At ESCONI for October 2021 – October 7th, 2021
- #80 – ESCONI Flea Market October 2000 – October 14th, 2021
- #81 – Field Trip to Wisconsin Dells on October 19th, 1952 – October 21st, 2021
- #82 – Poem: “Fossils” by Ogden Nash – October 28th, 2021
- #83 – Looking Back At ESCONI for November 2021 – November 4th, 2021
- #84 – Poem: “The Dinosaur” From “Line ‘O Type or Two” – November 11th, 2021
- #85 – Poem: “Rockhounds Poem” from March 1971 – November 18th, 2021
- #86 – Happy Thanksgiving! – November 25th, 2021
- #87 – Field & Street: Pit 11 Field Trip – December 2nd, 2021
- #88 – Looking Back At ESCONI for December 2021 – December 9th, 2021
- #89 – The A B Cs of What One Can Do With Rocks – December 16th, 2021
- #90 – Poem: The Night After a Field Trip – December 23rd, 2021
- #91 – Winter Collecting in 1963 – December 30th, 2021
- #92 – Looking Back At ESCONI for January 2022 – January 6th, 2022
- #93 – Gorgeous George – January 13th, 2022
- #94 – Dave’s Down To Earth Rock Shop in Evanston – January 20th, 2022
- #95 – Who’s Who: Who Were Howard and Olive Knight – January 27th, 2022
- #96 – Looking Back At ESCONI for February 2022 – February 3rd, 2022
- #97 – Fishing the Eocene Age – February 10th, 2022
- #98 – Poem: The Rock I Threw Away! – February 17th, 2022
- #99 – Wester Electric Magazine Rockhounds – February 24th, 2022
- #100 – Looking Back At ESCONI for March 2022 – March 3rd, 2022
- #101 – Poem: The Easy Way Out – March 10th, 2022
- #102 – 1992 ESCONI Show – March 17th, 2022
- #103 – Field Trip To Jacob’s Geodes 2007 – March 24th, 2022
- #104 – The McLuckie House From 1952 – March 31st, 2022
- #105 – Looking Back At ESCONI for April 2022 – April 7th, 2022
- #106 – Poem: Rebellious Bones – April 14th, 2022
- #107 – G-Shaft Candy – April 21st, 2022
- #108 – Poem: Field Trips – April 28th, 2022
- #109 – Looking Back At ESCONI for May 2022 – May 5th, 2022
- #110 – A Jurassic Twilight in Colorado – May 12th, 2022
- #111 – In Quest of Galena – May 19th, 2022
- #112 – Field Trip To St. Paul and Brookville, IN in April 1990 – May 26th, 2022
- #113 – Looking Back At ESCONI for June 2022 – June 2nd, 2022
- #114 – Collect Fossils… What a Waste of Time!
- #115 – Poem: “Safety Tip” From 1972 – June 16th, 2022
- #116 – Field Museum Photo Archives
- #117 – Poem: Trilobite Troubles – June 30th, 2022
- #118 – Looking Back At ESCONI for July 2022 – July 7th, 2022
- #119 – Poem: Rockhounds vs Rockhogs – July 14th, 2022
- #120 – What is “Earth Science”? – July 21st, 2022
- #121 – The Chicago Portage – July 28th, 2022
- #122 – Looking Back At ESCONI for August 2022 – August 4th, 2022
- #123 – Historical Documents – August 11th, 2022
- #124 – Poem: Resolution Lost – August 18th, 2022
- #125 – ESCONI At the College of DuPage 1983 – August 25th, 2022
- #126 – Looking Back At ESCONI for September 2022 – September 1st, 2022
- #127 – Piano Hill On Route 66 – September 8th, 2022
- #128 – ESCONI Shed September 1999 – September 15th, 2022
- #129 – Puttering In Pewter – September 22nd, 2022
- #130 – Poem: I Wonder? – September 29th, 2022
- #131 – Looking Back At ESCONI for October 2022 – October 6th, 2022
- #132 – Mazon Creek Open House Videos – October 13th, 2022
- #133 – Poem: To a Fossil – October 20th, 2022
- #134 – Field Trip To Bevel Granite in March 1957 – October 27th, 2022
- #135 – Looking Back At ESCONI for November 2022 – November 3rd, 2022
- #136 – Hilmer Case in Fossil Ridge Public Library – November 10th, 2022
- #137 – Archaeopteryx in Chicago! – November 17th, 2022
- #138 – Poem: Under Your Feet – November 24th, 2022
- #139 – Looking Back At ESCONI for December 2022 – December 1st, 2022
- #139 – Poem: Stonebone – December 8th, 2022
- #140 – Mineral Names – December 15th, 2022
- #141 – 1977 Holiday Letter From Bill Allaway – December 22nd, 2022
- #142 – Reply To Bill Allaway’s 1977 Holiday Letter – December 29th, 2022
- #143 – Looking Back At ESCONI for January 2023 – January 5th, 2023
- #144 – Geology Class Fall 1953 – January 12th, 2023
- #145 – Langford Book Ad From 1963 – January 19th, 2023
- #146 – Happy Birthday, Elmer Riggs! – January 26th, 2023
- #147 – Looking Back At ESCONI for February 2023 – February 2nd, 2023
- #148 – Johnny Cash and Dinosaurs?!? Yes! – February 9th, 2023
- #149 – Dues Are Due… – February 16th, 2023
- #150 – History of Coal City and Surrounding Areas – February 23rd, 2023
- #151 – Looking Back At ESCONI for March 2023 – March 2nd, 2023
- #152 – The Ten Rockmandments – March 9th, 2023
- #153 – ESCONI Flea Market 1999 – March 16th, 2023
- #154 – 1985 ESCONI Show – March 23rd, 2023
- #155 – Diary of a Snakebite Death – March 30th, 2023
- #156 – Looking Back At ESCONI for April 2023 – April 6th, 2023
- #157 – Poem: Self-supporting Dinosaur – April 13th, 2023
- #158 – ESCONI Logo – April 20th, 2023
- #159 – Field Museum Photo Archive – April 27th, 2023
- #160 – Hey, Field Museum… Happy 102nd Birthday! – May 4th, 2023
- #161 – Looking Back At ESCONI for May 2023 – May 11th, 2023
- #162 – Field & Street Archaeopteryx – May 18th, 2023
- #163 – Scenes from the 2000 CGMA Show – May 25th, 2023
- #164 – Looking Back At ESCONI for June 2023 – June 1st, 2023
- #165 – Poem: Summer Collecting – June 8th, 2023
- #166 – Spring In Illinois – June 15th, 2023
- #167 – Tom Testa Winter Freeze/Thaw – June 22nd, 2023
- #168 – British Columbia in Nine Days – June 29th, 2023
- #169 – Stevens T. Norvell III – July 6th, 2023
- #170 – Surefire Signs You’re a Rockhound – July 13th, 2023
- #171 – Fossil Cycad National Monument – July 20th, 2023
- #172 – Field Museum Photo Archives, Soemmerring’s Gazelle – July 27th, 2023
- #173 – Chiton Hill in Pit 11 – August 3rd, 2023
- #174 – Bola Tie Raffle – August 10th, 2023
- #175 – Erosion… Piece By Piece – August 17th, 2023
- #176 – Maple Leaf Field Trip 1997 – August 24th, 2023
- #177 – Poem: The Rockhounds Creed – August 31st, 2023
- #178 – Looking Back At ESCONI for September 2023 – September 7th, 2023
- #179 – Bracceville Field Trip Photos From 2016 – September 14th, 2023
- #180 – Field Museum Photo Archives – September 21st, 2023
- #181 – Science News From September 1970 – September 28th, 2023
- #182 – Looking Back At ESCONI for October 2023 – October 5th, 2023
- #183 – Braidwood Historical Society – October 12th, 2023
- #184 – Crater of Diamonds State Park 1972 – October 19th, 2023
- #185 – ESCONI Flea Market 2000 – October 26th, 2023
- #186 – Looking Back At ESCONI for November 2023 – November 2nd, 2023
- #187 – Chowder Flats Field Trip March 1994 – November 9th, 2023
- #188 – Field Museum Photo Archive: Mazon Creek Fossils – November 16th, 2023
- #189 – Happy Thanksgiving! – November 23rd, 2023
- #190 – Carbon Hill School Museum – November 30, 2023
- #191 – Looking Back At ESCONI for December 2023 – December 7th, 2023
- #192 – December 1953 Mazon Creek Facet – December 14th, 2023
- #193 – Poem: Coal Age – December 21st, 2023
- #194 – Rockhound Terms – December 28th, 2023
- #195 – Looking Back At ESCONI for January 2024 – January 4th, 2024
- #196 – Field Museum Photo Archives: Columbian Museum of Chicago – January 11th, 2024
- #197 – Poem: The Old Adage – January 18th, 2024
- #198 – My Very First Fossil – January 25th, 2024
- #199 – Looking Back At ESCONI for February 2024 – February 1st, 2024
- #200 – Field Museum: Terror Birds – February 8th, 2024
- #201 – Poem: He Gave Me a Rock – February 15th, 2024
- #202 – ESCONI’s Debut in “Rock and Minerals” – February 22nd, 2024
- #203 – They Crawled Out of the Swamps to Save the Mets – February 29th, 2024
- #204 – Looking Back At ESCONI for March 2024 – March 7th, 2023
- #205 – 2013 ESCONI Show! – March 14th, 2024
- #206 – Field Museum’s Apatosaurus – March 21st, 2024
- #207 – Poem: Diamonds and Gold – March 28th, 2024
- #208 – Looking Back At ESCONI for April 2024 – April 4th, 2024
- #209 – Tony Sobolik, I Remember… – April 11th, 2024
- #210 – Poem: A Rockhound = April 18th, 2024
- #211 – Don Auler Paintings – April 25th, 2024
- #212 – Looking Back At ESCONI for May 2024 – May 2nd, 2024
- #213 – ESCONI Class Song From 1967 – May 9th, 2024
- #214 – Braidwood Area Historical Society Revisited – May 16th, 2024
- #215 – 2001 CGMA Show – May 23rd, 2024
- #216 – Opal Hunting at the Spencer, ID Mini-Mine in 2019 – May 30th, 2024
- #217 – Looking Back At ESCONI for June 2024 – June 6th, 2024
- #218 – Karen’s Komments – June 13th, 2024
- #219 – Joliet Quarry Field Trip in June 1951 – June 20th, 2024
- #220 – Poem: “Collecting Poem” from November 1950 – June 27th, 2024
- #221 – Looking Back At ESCONI for July 2024 – July 4th, 2024
- #222 – Matthew Galloway’s Exciting Discovery June 2000 – July 11th, 2024
- #223 – Eugene Richardson: Fossil Localities Old and New – July 18th, 2024
- #224 – Steven J. Gould at the Field Museum – July 25th, 2024
- #225 – Hoffs on Vacation – August 1st, 2024
- #226 – Poem: Rockitis – August 8th, 2024
- #227 – Stones for Everyone – August 15th, 2024
- #228 – Midwest Federation Convention 1956 – August 22nd, 2024
- #229 – Happy 115th Birthday, Burgess Shale! – August 29th, 2024
- #230 – Looking Back At ESCONI for September 2024 – September 5th, 2024
- #231 – Labor Day Field Trip to Sylvania, OH 1969 – September 12th, 2024
- #232 – Sue visits SUE – September 19th, 2024
- #233 – Origin of Geodes – September 26th, 2024
- #234 – Looking Back At ESCONI for October 2024 – October 3rd, 2024
- #235 – Field Trip to Rosiclare, IL for Fluorite in 1958 – October 10th, 2024
- #236 – Poem: Only a Rock – October 17th, 2024
- #237 – Bruce Stinchcomb, Route 66, and Mazon Creek – October 24th, 2024
- #238 – ESCONI 10th Anniversary Pictures – October 31st, 2024
- #239 – Looking Back At ESCONI for November 2024 – November 7th, 2024
- #240 – Happy Veterans Day from ESCONI… and the Field Museum! – November 11th, 2024
- #241 – Happy 75th Birthday, ESCONI!!! – November 21st, 2024
- #242 – Looking Back At ESCONI for December 2024 – December 5th, 2024
- #243 – Rock Collecting Limericks – December 12th, 2024
- #244 – Leaverite – December 19th, 2024
- #245 – Poem: Wonderland – December 26th, 2024
- #246 – Looking Back At ESCONI for January 2025 – January 2nd, 2025
- #247 – The Gemini Giant of Wilmington – January 9th, 2024
- #248 – The Afternoon Search – January 16th, 2025
- #249 – This Index Page
- #250 – Andy Hay Speaks at Lizzadro in 2001 – January 30th, 2025
- #251 – Looking Back At ESCONI for February 2025 – February 6th, 2025
- #252 – Field Trip to Thorton Quarry in 1955 – February 13th, 2025
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