Items in this subseries consist of the financial documents Riegel dealt with for the Dupont Awards. Items of note include letters with the awards' finanical statements and individual bills for expenses.

These newsletters were disseminated by allied forces to citizens of liberated countries. These newsletters, ranging from Dutch to Flemish to French often described events on the front lines and encouraged readers to support the war effort.

Items in this subseries consist of letters between Riegel and over 550 correspondents related to Washington and Lee's Journalism program. Letters range in theme from inquiries about the program, job openings for journalism graudates, the Associated Press, the British Library, the American Association of Schools with Departments in Journalism, and others.

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.