Jim O'Neill recommeds these books...
Robert Solow's work on Growth Theory Rudi DornBusch's theories on exchange rates John Williamson's research on exchange rate equilibrium Bela Balassa and Paul Samuelson's research on productivity and trade Rudi Dornbusch and Stanley Fischer wrote the macroeconomics bible David Miles, Andrew Scott and Francis Breedon's macro book Angus Maddison's work on the history of growth Marty Feldstein's work on monetary and cyclical research Max Corden's research on oil prices The real life stories like; UK industrial Revolution The Californian Gold Rush China Road Maximum city etc..