Presidential Libraries Deliver a Surprise

* It's not every day you get mail with a president's signature on it.

But starting today you can, if you buy a new Presidential Libraries stamp at the post office and mail it to one of the libraries.

In honor of the 50th anniversary of the presidential library and museum system, the signatures of the 12 former presidents with official libraries will be used to cancel the stamps. The 12 are: Bill Clinton, George H.W. Bush, Ronald Reagan, Jimmy Carter, Gerald Ford, Richard M. Nixon, Lyndon B. Johnson, John F. Kennedy, Dwight D. Eisenhower, Harry S. Truman, Franklin D. Roosevelt and Herbert Hoover.

To get a reproduction of a presidential signature, simply buy a stamp (for 37 cents) and put it on an envelope addressed to yourself. Put that envelope inside a larger one and mail it (you'll need a second stamp) to one of the presidential libraries before Sept. 3. You will get your envelope -- with the signature of the president whose library you wrote to -- back in a few days.

You can learn more about the presidential libraries, including their addresses, at your post office or the Web site presidential-libraries.

Mail it in: Harry S. Truman is among the presidents with a signature cancellation.