Contact the Charitable Games Division of the Missouri Gaming Commission. The number is (866) 801-8643. The website of the Missouri Gaming Commission has applications and a copy of the state regulations for charitable bingo. Here's the web address -- just click on the Charitable Games/Bingo tab:
http://www.mgc.dps.mo.gov/
Bingo regulations can be complex, though. I'd strongly recommend making the phone call to find out the rules for your particular situation.
Good luck!
- Craig
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