From publisher blurb:
This file covers 12 Prestige Classes for the 1948 Campaign World. Some, like the Arch Mage, the Commander, and the Psionic Stalker, are gathered from other OGC sources and adjusted to fit the setting. Others, like the Nazi Occultist and the Commando, are designed specifically for this release. Stop searching through a bunch of different books and PDFs to find the right Prestige Class for your 1948 hero. This file collects all the most common and relevant classes into one convenient location.
Includes the following Prestige Classes:
Arch Mage
Artificer
Commander
Commando
Dark Sage
Ecclesiarch
Expert Marksman
Martial Arts Master
Mentalist
Nazi Occultist
Psionic Stalker
Robotics Engineer