"Oxfam volunteer Andrew Chapman has uncovered another valuable volume, but has given the book back to its original owner instead of selling it. Two years ago, Mr Chapman, a rare books specialist for the charity’s bookshop in St Giles, found a scruffy copy of Graham Greene’s Rumour at Nightfall. The first edition of the 1930s novel fetched about £15,000 at auction, the most expensive book Oxfam has ever sold. Now, Mr Chapman, 43, a pilot who flies long-haul routes for Virgin, has made another lucky find after a book was donated anonymously. In the basement of the shop, Mr Chapman discovered a 1556 Italian history of the Dukes of Ferrara called Commentario delle cose di Ferrara. But a tiny stamp at the back of the book indicated it had once belonged to the Royal Society, in London, and Mr Chapman contacted staff so he could return it"