Arnold Palmer - A Personal Journey by Thomas Hauser
Golf is the only sport where you do not have to be a professional player to describe yourself as a 'golfer', all you seem to need is the desire to be able to strike the little ball without malice, and there you are, when asked, you can safely reply 'I am a golfer'.
There have been, and continue to be, many books written on the sport, those that help you to achieve a better standard of play, others that compile the humour associated with the game and some that supply an endless list of statistics, or detail the history of specific courses or players.