Pioneering British mathematician and mechanical engineer (1791–1871) whose Difference Engine and Analytical Engine are generally acknowledged as the first programmable computers. Third-person ALS signed within the text, one page, 3.75 x 4.75, no date. Letter declining an invitation. In full: “Mr. Babbage very much regrets that he is unable to have the pleasure of dining with Mr. & Mrs. Stafford Cary on Saturday Inst. as he leaves town before that day.” In fine condition. RR Auction COA.
