There have been several newer editions of the American Air Mail Catalog since the 1947/1951/1959 versions. The newer editions include a great deal more information and corrections from the early editions such as the 1947/`951/1959 one. The newest one, the 7th edition, is in the process of being issued now. Volume 1 was just released and it includes U.S. Contract Air Mail (CAM) Routes 1-34, Philippine Islands, and Foreign Flag U.S. Flights. It is 690 pages and hardbound, and weighs about 5 pounds. It is in full color with many illustrations and has up to date pricing. The next two Volumes in the 7th edition are expected to be released in the coming year. Or you can still buy the three volumes of the previous edition, the Sixth, though the pricing in those is now out of date since they were released in 1998, 2003 and 2005 respectively. You can buy all of these by going to the American Philatelic Society website at
www.stamps.org and going to the publications page. APS is now handling the sales of the American Air Mail Society's publications. And, if you are interested in collecting first flights, you will likely want to join the American Air Mail Society. Their website is
www.americanairmailsociety.org They are a great group of collectors.