Correspondence, memoranda, and clippings relating to the involvement of C. B. Boothe, Homer Lea, and other Americans, with Sun Yat-sen and other Chinese, in schemes to overthrow the Chinese Imperial Government, 1908-1911, and to Laurence Boothe, son of C. B. Boothe, 1905-1976. Includes a mounted photograph of Sun Yat-sen, 1910; printed copies of two books by Homer Lea, The Vermilion Pencil, and The Valor of Ignorance; and photocopies of mortality registers of Sacramento, California, 1850-1851.