Someone asked me if the Simpsons Stamps were soakable. I know the answer is (somewhere) in Linn's.
Along the way, I found that Lloyd de Vries has a nice reference site on his Virtual Stamp Club. The key to his table is a traffic light icon: green for soak, yellow for caution, and red for no-soak.
Here's the page for 2009, but it includes links to other years:
http://www.virtualstampclub.com/2009usnew.htmlKirkS