The lower-level personnel in Roman public
libraries of the early Empire were part of the emperor's domestic staff,
just as they had been household slaves in late Republican libraries. This
observation carries important implications. The book collections, at
least in origin, were the emperor's private possessions, not public
services like the roads, and he might closely control their use. His
slave vilici, not equestrian procurators, ordinarily directed
the daily work of the staff, and the commissioners of all the libraries
(originally Greek intellectuals, and not always procurators) may have
served primarily as scholarly advisers. No evidence supports the idea
of a centralized library administration.