I was enormously obsessed with Swallows and Amazons aged 8 - 10. A heartening number of today's children still love them - not huge numbers, but enough. Just William is mostly read by the adults. Biggles has been reissued, but few children read him - it's mostly adults who borrow the books. The Willard Price series still gets read by children, but there is some pressure to remove them from the library shelves, for containing out-dated attitudes to other countries. I'm keeping them for as long as I can, though, because there is a dearth of good books for boys. Children's publishing has gone very pink.