Fairy Faith In Celtic Countries by Wy Wentz

This book is a good source of fairy culture from Ireland, Britain, Scotland, Wales, Cornwall and the like. There are a lot of case studies in the beginning, so if you don't like those, stay away- or just skip over it. The author of this book is an anthropologist who went around the British Isles collecting fairy lore. He uses both stories from the people he meets and later gets into different aspects of the fairy faith. This is a wonderful resource and a must read for all seriously obsessed with fairies