| Edwards River Earth Science Club, 612 S.E. 3rd Street, Aledo, Illinois 61231-2004 |
| Southern Illinois Earth Science Club, Inc., 1001 Wilshire Drive, Mt. Vernon, Illinois 62864 |
| Worthen Earth Searchers, 1765 East Country Road 900, Carthage, Illinois 61321 |
| Chicago Rocks and Minerals Society, 7111 West Summerdale, Chicago, Illinois 60656 |
| Midwest Historical Research Society, 4638 North Francisco, Chicago, Illinois 60625 |
| Central Illinois Gem and Mineral Club, 1483 East Wood Street, Decatur, Illinois 62521 |
| Illinois Lithophilics, Ltd., 2134 Sprucewood, Des Plaines, Illinois 60018 |
| Sauk Valley Rock and Mineral Club, 890 White Oak Drive, Dixon, Illinois 61021 |
| Elgin Rock and Mineral Society, 700 Ford Avenue, Elgin, Illinois 60120 |
| West Suburban Lapidary Club, 227 Crystal, Lombard, Illinois 60148 |
| Northwest Illinois Rock Club, 3117 Kunkle Boulevard, Freeport, Illinois 61032 |
| Esconi (Earth Science Club Of Northern Illinois), P.O. Box 321, Downers Grove, Illinois 60515 |
| Rock River Valley Gem and Mineral Society, 6388 Nimtz Road, Loves Park, Illinois 61111 |
| West Central Illinois Rock and Mineral Club, 625235 North I 97, Cuba, Illinois 61427 |
| Siloam Springs Earth Science Club, Route 1, P.O. Box 63, Huntsville, Illinois 62344 |
| Southern Illinois Earth Science Club, 1001 Wilshire Drive, Mt. Veron, Illinois 62864 |
| Greater Oak Lawn Diggers, 4141 West 99th Street, Oak Lawn, Illinois 60453 |
| Park Forest Earth Science Club, P.O. Box 235, Park Forest, Illinois 60466 |
| Peoria Academy of Scienceigeology Section, 115 Hollybrook, Chillicothe, Illinois 61523 |
| Gem City Rock Club, #6 Deer Ridge, Quincy, Illinois 62301 |
| Black Hawk Gem and Mineral Club, P.O. Box 6014, Rock Island, Illinois 61204 |
| Lincoln Earth Orbit Science Society, 107 Deer Creek Road, Rochester, Illinois 62563 |
| Sauk Valley Rock and Mineral Club, 890 White Oak Drive, Sterling, Illinois 61021 |
| Lake County Gem and Mineral Soctety, 519 Center Street, Waukegan, Illinois 60085 |
| Chicago Area Paleontological Society, 1911 Sherwood Place, Wheaton, Illinois 60187 |
| The Bead Society of Greater Chicago, P.O. Box 8103, Wilmette, Illinois 60091-8103 |
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