@IRonMaN @sjrcpa found something very interesting in the old file... The 2006 IRS 990 package with the instructions and blank forms. On the cover of booklet it states organizations exempt from income tax under Section 501 C 4 of the Internal Revenue code.. I'm not sure if that is correct but that appears to be the code that the IRS has or they wouldn't have sent them that booklet.... I don't know what happened back in 1963 because I wasn't around yet so I may have to go with this 501 C 4 , what do you think?