This reunion was held 25 NOV 1889 and your J.M. Quinn, Co E, 1st MS Infantry was in attendence along with my GG Grandfather, Josiah E. Wright, Co D, 42nd ALA Infantry. There is a photo of this on page 18 of the "Pickens co, AL history and families" book. Also, there is a complete roster of those in attendence on page 13 of the new book,"The Heritage of Pickens County, ALA" that was issued in 1999 to celebrate the millenium 2000.
They met again on 30 July 1890 in Carrollton and around 1912. I believe these books are available from the Pickens co, AL genealogical Society.