</td>
</tr></table>
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Simpson Centenary College (now Simpson College), established in 1860 in Indianola, Iowa
Omicron Chapter Founded April 10, 1880; Closed February 10, 1890; 72 initiates (as of closure 1890)
Omicron Deuteron Chapter February 10, 1990
417 initiates (as of June 2012)
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