Books:-
The great artists, their lives, works and inspiration Part one, Van Gogh

Web Links:-
http://www.carpenter9.freeserve.co.uk/artist/letter2.htm
http://www.artandartist.co.uk
http://www.about-van-gogh-art.com/van-gogh-biography/index.htm
http://www.van-gogh-art.co.uk/artist/chairs.htm