The new Phi Beta Psi website is
www.phibetapsi.org.
They were founded in 1904 as a high school sorority. Their philanthropy is "cancer research," apparently loosely defined so that local chapters can contribute to local efforts as well as the national funding of a grant.
They say they are one of the largest non-collegiate sororities. There's a directory on the website. I counted--86 chapters, 40 of which are in Indiana and 15 in Ohio. (P.E.O. has 2000+ chapters and I think Beta Sigma Phi is similar.)