Yes, this is true. I'm a member of the American Legion Auxiliary and we collect coupons and send them in. I'm not sure exactly the process for sending them in, but I can find out and re-post. I cut them out of newspaper fliers, magazines, etc. I place them by category as noted below and turn them in to the person in our auxiliary who collects them. You might check with your local American Legion Auxiliary to find out if they collect and send coupons in. If they do, you could give them to a member to turn in or drop them by that legion post. We were told to separate coupons as noted below:
Food
Non-Food (such as toiletries, etc.)
Pet Food