I hope this exercise is at least useful for collecting some resources and cutting down on search time. Thanks to Dennis for his contribution. Just saw a couple of other books I thought I’d link to.
Vergil in the Middle Ages by Domenico Comparetti (Benecke translation)
Vergil: A Biography by Tenney Frank
And while we’re on the subject of former Bryn Mawr faculty, here is Tenney Frank’s Roman Imperialism.
The Cults of Ostia, Lily Ross Taylor’s doctoral thesis
And a couple from Paul Shorey:
The Unity of Plato’s Thought