Abstract
The first passage quoted above is the only certain evidence we have about Tacitus' early career, until we come to his tenure of the praetorship in A.D. 88. His career before that date has been the subject of much speculation, so it is surprising that no notice has been taken of the second passage. Syme does not even mention it, and C.W. Mendell merely describes it as ‘curious’. The reason for its dismissal is presumably that the post of a bibliothecis was equestrian, while Tacitus was a senator. Yet in view of our lack of other evidence about his early career, it seems at least worth considering how Pastrengo came to make his statement, even if we conclude he was wrong