Reference
MicroPUL. Microfilm Edition of Mark Twain’s Previously Unpublished Letters. Prepared by Anh Quynh Bui, Victor Fischer, Michael B. Frank, Robert H. Hirst, Lin Salamo, and Harriet Elinor Smith. 8 vols. Berkeley: The Bancroft Library.
MicroPUL. Microfilm Edition of Mark Twain’s Previously Unpublished Letters. Prepared by Anh Quynh Bui, Victor Fischer, Michael B. Frank, Robert H. Hirst, Lin Salamo, and Harriet Elinor Smith. 8 vols. Berkeley: The Bancroft Library.