I didn't know your organization was founded at U of Michigan. What a perfect setting for your centennial convention, back where it all began!
We've got a little of our history tied up in that area, too. Ypsilanti is the site of our second chapter, one of the three OPA chapters who functioned independently on a local basis before forming our national org in 1967. There's a reference to Ypsilanti in one of our rituals, and the person speaking that part at my chapter often stumbled over the pronunciation.
Have fun!