Alpha Delta Pi went from the Adelphean Society to Alpha Delta Phi Sorority (1904) to Alpha Delta Pi Sorority.
That little "extra" twist is due to a Northern fraternity being upset by our use of Alpha Delta Phi, so the Phi became a Pi in 1913.
So, if any of y'all EVER see any Alpha Delta PHI pins that look like the Alpha Delta Pi Diamond <> for heaven's sake, please let me know!!!!
