There have been 60 vocalists in the history of the Treadwell Drifters line, including several splinter groups by former Drifters members (not under Treadwell's management).
Terdapat 60 vokalis dalam sejarah The Drifters milik Treadwell, yang meliputi beberapa grup pecahan dari para mantan anggota The Drifters (tidak berada di bawah manajemen Treadwell).