There's a copy of the 1955 Ferranti Pegusus programing manual on eBay at the moment. (item 8774515396). I was very tempted to buy it and scan it, but then I noticed that a scan of the 1962 edition of the same manual is already available from bitsavers.org. The introduction to the 1962 version mentions the original document and says that it adds extra information about the Pegasus 2 to it, but it doesn't really say if anything else has changed. Does anyone happen to know if there's any useful/interesting material in the 1955 edition that *isn't* in the 1962 edition? Cheers, Brian.