Consists of selected papers of Thompson (Princeton Class of 1883). Included are diaries (1913, 1918); musical scores; two plays, The Peace Girl and Jane Shore; various short stories and scenarios, such as "The Blue Lotus," "In Old Japan," and "Killing the Mandarin"; a group of carbons, typescripts, and tearsheets of The Poetical Works of Vance Thompson, compiled posthumously by his wife, Lilian Spencer Thompson, an actress who used the stage name of Mlle. Severin; and a section of writings for the press containing articles, book and theater reviews, publication contracts, and clippings. Correspondence includes letters (1897-1906) to Dr. William J. O'Sullivan, a friend and lawyer, letters (1918-1925) to his wife, letters from his father, Rev. Charles L. Thompson, and diplomatic correspondence (1918-1919) while he was political adviser to the U.S. embassy at Rome. Also present are diplomatic documents, a scrapbook of clippings concerning his wife's acting career and dramatic productions of his works, bookplates, clippings, tearsheets, and photographs of Thompson, his family, and Belgium in 1918.