Praise for previous volumes of 'The Papers of Thomas A. Edison:' "The essence of the volume is Edison's technical notebooks, a window onto the inventor's workshop. His lucidity comes through everywhere...His writing and drawing come together as a single, vigorous thought process."--Russell McCormmach, 'New York Times' "A mine of material...Scrupulously edited...No one could ask for more...A choplicking feast for Edison biographers--well into the next century, and perhaps beyond."--Fred Howard, 'Washington Post' "A triumph of the bookmaker's art, with splendidly arranged illustrations, essential background information, and cautionary reminders of the common sources on which Edison's imagination drew."--David Joravsky, 'New York Review of Books'