Sketch of
The Analytical Engine
Invented by Charles Babbage
By L. F. MENABREA
of Turin, Officer of the Military Engineers
from the Bibliothèque Universelle de Genève, October, 1842, No. 82

With notes upon the Memoir by the Translator
ADA AUGUSTA, COUNTESS OF LOVELACE

...is well worth your time, if you are the sort of person who said to themselves, 'Ooo! Analytical engine!' when you read that. (ht)