The Penguin Guide to the Superstitions of Britain and Ireland by Steve Roud
Are black cats lucky or unlucky? What should you do when you hear the first cuckoo? Since when have people believed that it's unlucky to shoot an albatross? Why does breaking a mirror lead to misfortune? This fascinating collection answers these and many other questions about the world of superstitions and forms an endlessly browsable guide to a subject that continues to obsess and intrigue.