The Barnhart Dictionary of Etymology: 0

This is the conclusion of an amazing 20 year project. The result is one of the best etymological references available today (and IMHO, certainly better organized and laid out than the Oxford E.D.). While the Oxford emphasizes British sources, the Barnhart's focus is decisively American. (So you should really get both.) LONG OUT OF PRINT - here's the good news, it has been re-released (1999) and is now available as the Chambers Dictionary of Etymology, and at half the price the price of the U.S. Edition! Highly recommended.