Mark Twain's other woman : the hidden story of his final years - Skandera-Trombley, Laura E. (New York : Alfred A. Knopf, 2010)
Includes bibliographical references and index.
Keywords: Lyon, Isabel, -- 1863-1958.; Twain, Mark, -- 1835-1910 -- Last years; Twain, Mark, -- 1835-1910 -- Relations with private secretaries; Twain, Mark, -- 1835-1910 -- Relations with women; Authors, American -- 19th century -- Biography; Authors, American -- 20th century -- Biography; Private secretaries -- United States -- Biography