<<Disclaimer: Verify this information before applying it to your situation.>>
One of the beset articles I have read yet... in the Wednesday Food
Section of the Boston Globe.
Get the printed version if you can - it includes additional information
as well as recipes.
http://www.boston.com/ae/food/articles/2004/07/14/a_picnic_everyone_can_enjoy/
*Please provide references to back up claims of a product being GF or not GF*