Dana -
You can purchase the new FS 595b fan deck directly from the Government at the following web site:
http://www.ipmsusa.org/links/fs595purchase.html
It ain't cheap, but consider it an investment that will last a lifetime. It will only increase in value as time goes on. I paid less than $20 for the loose leaf version (FS 595a) in the 1970s.
Pete