Spufford, Francis. "The Difference Engine and The Difference Engine"
Comments: A critical essay on the philosophy and history of alternative history, in the light of Gibson and Sterling's The Difference Engine, q.v., and the London Science Museum's recent completion of a working engine from Charles Babbage's never-executed original plans.
Published: In Cultural Babbage: Technology, Time and Invention (eds. Francis Spufford and Jenny Uglow), Faber & Faber 1996 (0571172423), 1997 (0571172431BUY).