His sister Gabrielle has written a book about him. Great Guardian article here:

http://www.theguardian.com/lifeandstyle/2014/nov/15/i-want-to-complicate-the-nick-drake-story?CMP=fb_gu

‘If only I could feel that my music had helped anyone at all...' - Isn't that a heartbreaking statement, from someone whose music has meant so much to so many...had Northern Sky on my wedding playlist last year and I'm sure I'm not alone.