Johnnnes Quasten – Ancient Christian Writers The Works Of The Fathers In Translation (1947)
From “Clauis patrum latinorum” list of abreviations i found 7 vols of Ancient Christian Writers (ACW) edited by Johannes Quasten and Joseph Plumpe pow. by IA staff.
these are the avaible vols from archive.org:
the first 6 vols are posted into a single link here