Phi Mu and Alpha Delta Pi have some wonderful connections to each other.
We were both founded at Wesleyan College - ADPi in 1851 - as The Adelphean Society and Phi Mu in 1852 as The Philomathean Society. One of Phi Mu's founders - Mary Dupont Lines was roommates with the President of The Adelphean Society.
Both sororities are well remembered at the college still. There are iron gates at the college with both represented. We share space at The Cannonball House in Macon, Georgia. They have re-created the original meeting rooms of each society, displaying wonderful memorabilia of each group. You can see the rooms by going to the Cannonball website:
http://www.cannonballhouse.org and then look under Tour Info
Shannon