Three items signed by presidents: a TLS signed "Harry S. Truman," one page, personal letterhead, March 9, 1971, thanking his correspondent for "the Thomas Hart Benton series of articles"; an ink signature by Richard Nixon, "RN," on a personal 3.5 x 2 card; and an ink signature, "Best wishes, Jimmy Carter," on two slips affixed to a 5 x 3 card. The Nixon and Carter signatures have been encapsulated in PSA/DNA authentication holders, and the Truman letter has a PSA/DNA label affixed to the reverse. In overall fine condition.