History of the Department of Earth and Atmospheric Sciences
| 1909 | Wiechert installed at Saint Louis University.
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| 1925 | Department of Geophysics founded.
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| 1926 | Galitzin-Wilip instruments installed at Florissant, Missouri.
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| 1927 | Wood-Anderson seismographs installed at Saint Louis University Gymnasium.
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| 1930 | Seismographs installed at Saint John's Seminary, Pulaski Heights, Little Rock, Arkansas. |
| 1938 | Seismographs installed at Southeast Missouri State University, Cape Girardeau, Missouri.
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| 1961 | Instruments installed at Rolla, Missouri, Manhattan, Kansas, Dubuque, Iowa and Bloomington, Indiana as part of U.S. Air Force's Vela Uniform Research on nuclear explosions. |
| 1974 | Regional Seismic Network installed to monitor New Madrid and Wabash Valley (Illinois) Earthquakes. Grows to 50 stations by 1985. |
| 1990 | Modern broadband digital seismographs installed as part of BILLIKEN NETWORK. |
| 1997 | COOPERATIVE NEW MADRID SEISMIC NETWORK established. (Saint Louis University and University of Memphis) Network consists of 14 broadband digital instruments and 90 3-component analog systems. |
| Currently | Real Time Location - Seismograms on the World Wide Web |
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