HERE'S THE POST OFFICE - WHAT ABOUT CASHING THOSE SAVINGS STAMPS Don't let yourself be diddled by the Squander Bug at the last stage. Those National Savings Stamps took a lot of getting and you're justly proud of them. Keep your " stamp collection " out of his clutches. Invest the stamps you have saved—then you and the country will reap the benefit of your thrift. Use your Stamps to buy Savings Certificates, or to increase your deposit at the Post Office or a Trustee Savings Bank Issued by the National Savings Committee.