We should mark the passing for Brian Pearce, who died recently. The Guardian carried his obituary today.
http://www.guardian.co.uk/books/2008/dec/11/brian-pearce-obituary-communist-history/print
Pearce was one of the CP historians who left the party in 1956 over Hungary and joined the Trotskyist movement. He wrote some brilliant small studies of the left in Britain, history of the CPGB (especially on trade unionism), the Bolshevik party, the first world war and other matters. These are on the Marxist Internet Archive and repay reading.
http://www.marxistsfr.org/history/etol/writers/pearce/index.htm
Anyone who has a decent collection of Marxist books will have something Pearce translated. He was the foremost translator of Trotsky at a time when his works were largely inaccessible. Many Trotsky pamphlets and books published by New Park (The Healyite publishers) were done by him, as well as others put out by Pathfinder. These included the 5 volume Military Writings, Permanent Revolution & Results and Prospects, and the collection on The Balkan Wars. He also translated Liebman’s Leninism under Lenin, Preobrazhensky’s New Economics and the 1903 Minutes of the RSDLP, where the Bolsheviks and Mensheviks split.
As such Pearce made a huge contribution to educating generations of Marxists.