Supremely rare White House card, signed in bold fountain pen, “Lyndon B. Johnson.” In fine condition. Accompanied by the original White House transmittal envelope and a full letter of authenticity from PSA/DNA. This exact card was featured in Charles Hamilton’s book American Autographs, and in From the President’s Pen by Larry F. Vrazlik and Michael Minor; in the latter book it is identified as the only authentically signed example known to exist. A true rarity in modern presidential autographs. RR Auction COA.