Sketch of the Analytical Engine invented by Charles Babbage, Esq., by 75107 Luigi Federico Menabrea [Author: Luigi Federico Menabrea] [Translator: Ada Lovelace] [Link: https://www.gutenberg.org/ebooks/75107] note: link will be active within two hours of posting. Thanks to Laura Natal Rodrigues (Images generously made available by The Internet Archive.) Regards, Al