CHARLES BABBAGE, AUTOGRAPH LETTER SIGNED, TO MRS ROBINSON, 25 AUGUST 1862

complaining of exhaustion ahead of a visit to her ("...the excitement of the Exhibition has done much to weaken me..."), but explaining that he is determined to complete a book that will be his revenge on critics of his Calculating Engine, 2 pages, 8vo, Dorset Street, London, 25 August 1862, lacking integral blank, adhesive remains to margin "...I have however a debt to pay to those who have used all the small power and wit they possess to destroy the Analytical Engine. I mean honestly to repay it, even with compound interest and if I should not live to publish it: my little book will, though a post-obit, be a full acquittance of my debt..."