http://bactra.org/notebooks Cosma's Notebooks en http://bactra.org/notebooks/1994/10/03#babbage Other calculating engines. In the mind of his contemporaries. <ul>To read: <li><cite><a href="http://socserv2.socsci.mcmaster.ca/~econ/ugcm/3ll3/babbage/index.html">Economy of Machinery and Manufactures</a></cite> <li><cite>Passages from the Life of a Philosopher</cite> <li><cite>Science and Reform: Selected Works of Charles Babbage</cite> (ed. Anthony Hyman) [<a href="http://www.cup.org/Titles/34/0521343119.html">Blurb</a>] </ul>