Alfred Hermann Sommer (1909-2003) was a physical chemist who specialized in photoemission research and development. After fleeing from the German Nazi regime and working in London, he immigrated with his family to the United States in 1953. He took a job with the Radio Corporation of America (RCA) at its David Sarnoff Laboratory in Princeton, New Jersey, where he worked until 1974. The collection consists of several of Sommer's articles, publications, and patents.