Does anyone know if Twain used his own scrapbook (the one he patented)? Also, does anyone know of an illustration or description of his: -baby bed-clamp -microscopic maps (or an explanation of why he thought they were necessary) -inventions he invested in (besides the Paige Compositor and kaolatype), including a cash register, spiral hatpin, envelope maker, weaving machine, marine telegraphy, or clothing from peat Thank you, Cynthia