The EDSAC Replica Project
The EDSAC Replica Project is reconstructing the Edsac as it existed in 1949-1951, using the original vacuum tube elcetronics
Cambridge University's website for the 50th anniversity of EDSAC, 15-16 April 1999 - EDSAC99
Leo Computers Society
A site dedicated to LEO (Lyons Electronic Office). LEO, the commercial version of EDSAC, was probably the world's first business computer. Leo Computers Society.
HISTORY OF COMPUTING IN BRITAINThe National Museum of Computing
Computer Conservation Society