I subscribed to them at the time and have read and re-read them many times, from beginning to end. Besides being a delightful writer, Fred was a very good teacher and his techniques, tips, and war stories are outstanding! I will continue to re-read them and have even referenced a number of them that I keep going back to on toning, fixing, and other areas of concern.
His videos are also superb. I strongly recommend getting all his vids, newsletters, his book on the Zone System, and even his photo books if you can find them. They're well worth the investment and the best "photo course" out there as far as I'm concerned.
They do come up on eBay from time to time and usually for decent prices, considering how much info you're getting. They really are a superb reference source and will never be outdated.