Academic prestige rankings are stagnant over time despite departmental changes. Departments might maintain their prestige through hiring and training patterns. This paper uses data from professors' employment histories as of January 2007 to define a retrospective employment network and uses that network to describe the relationship between departments' centrality in the hiringnetwork and academic prestige. This paper tests whether that relationship depends on whether or not we consider PhD training as part of the network and on department size. In addition, the analysis shows that the relationship is robust to variations in graph definitions and measurement techniques.