Not long after a museum opened on the former Nazi party rally grounds at Nuremberg, locals began turning up in sheepish dribs and drabs with Third Reich memorabilia that had been kept in their families for generations. Over time the collection grew to thousands of books, including numerous copies of Mein Kampf, and hundreds of knick-knacks and relics, ranging from Adolf Hitler action figures to SS dress daggers and a cast-iron eagle with a 10ft wingspan. Now the curators must work out what on earth to do with it all. The Documentation Centre, housed in the north wing of the...