Riegel's correspondence in this series is primarily between different awards administrators and judges. Riegel corresponded with approximately 320 different individauls within this subseries. Correspondents of note include Mrs. Dupont, Turner Catledge, and Sol Taishoff.

The Outpost Services Bureau provided support to govenrment agencies in ensuring their ability to function via connecting them with lines of communication and providing support when necessary. They created monthly progress reports of various outpost stations reporting the status of these stations and their effectiveness.

Journalism 102 was a course that covered the principles of Journalism, and at times was a continuation of Journalism 101 to create a year long class. Items in this subseries consist of course syllabi, class handouts, quizzes, exams, lecture notes and other material Riegel had that was relevant to the course.

Items in this series pertain to Riegel's personal correspondence between himself and colleagues, friends, and family. Some material is related to or mentions his work, but the majority of the material is about his or other people's personal lives, opinions, and thoughts around world events.