I saw this on the Gateway Macon website, and found it interesting. Sadly, it does not say if the ladies pictured are Adelpheans or Philomatheans.
"The world’s first 2 secret societies for women where founded at Wesleyan College. Those two secret societies’ became known as the sororities’ of Alpha Delta Pi and Phi Mu. Founded on May 15, 1851, by Eugenia Tucker, Alpha Delta Pi is the oldest secret society for college women in the world. Phi Mu was also founded at Wesleyan College in 1852 and is the second oldest sorority in the nation."