The Scrapbook boards series consists of unbound boards that have photographs and memorabilia pasted onto them relating to Jennings’ life and work. The boards are mostly labeled with the date and location to which the items on them refer, and represent a chronological account of most of his career. However, some gaps in the chronology exist, which may reflect missing boards lost either prior to the collection’s accession or due to a flood at the former David Sarnoff Library. Items featured on the boards are predominantly from Japan, but there are also items from China, Korea, the Philippines, and the United States. Many of the items include Jennings’ commentary in the form of typewritten captions. Boards dated between 1938 and 1953 primarily consist of pamphlets listing international telegraph rates for RCA and the Japanese Ministry of Telecommunications in Japan. Boards dated 1955 to 1963 include photographs and various ephemera related to Jennings' work and personal life in Japan. Photographic subjects include visits by RCA executives and board members to Japan, participants of the RCA employee exchange program, various informal and formal dinners and cocktail receptions, meetings, expos, and symposia, club events, and the David Sarnoff RCA Scholarship Program for Japan annual luncheons. Other photographs depict friends, weddings, Geisha parties, sightseeing around Japan, trips to Korea and the Philippines, and Jennings being awarded the Third Class Order of the Sacred Treasure and a ceremonial visit to the Imperial Palace to record appreciation to the Emperor of Japan, and other events.

Memorabilia on the boards include newspaper clippings and cartoons; telegrams; menus; Jennnings’ identification cards; greeting cards; items related to Japanese baseball; invitations to receptions, dinners, and performances from government officials and Japanese and international telecommunications representatives; brochures and pamphlets for cultural sites, hotels, and meetings; and tickets to sporting events, cultural sites, museums, exhibits, and theater and music performances.

The series also includes loose items which may relate to board content that became separated or to Jennings’ manuscript on the history of Japanese telecommunications. Included are photocopies of photographs included in Jennings’ book. Some ephemera predate Jennings’ time in Japan, relating to his life before and during World War II, including his time in the military. These include ticket booklets from the 1939 New York World’s Fair, tickets to a Wendell Willkie campaign rally, ration cards, and other items.