Books

London: Longman, Green, 1864. First edition. Pp xii, 496, [24]. Neatly rebacked preserving all but the top of the original spine, affecting publisher's gilt lettering to head of spine (top margin of gilt ruling missing), new endpapers, occasional spotting to contents otherwise a very good copy. Frontispiece showing Babbage's Difference Engine no. 1. Charles Babbage (1791-1871) originated the concept of a digital programmable computer.