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				Originally posted by vkaul  
I've heard from reputable (staff) sources, (but can't verify) that Horton considered the greek letters: Beta Sigma Alpha for the, as of yet, unborn fraternity. They were discarded because their meaning would be transparent. The S on the service pin is also transparent, which leads to its being discussed as "open" knowledge. 
 
			
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 Yes, Horton did consider those letters and discarded them.  Some early chapters actually formed themselves under those letter before they found out about APO and joined us.