 The former president's footsteps are also said to be heard in the hall outside the Lincoln Bedroom.As reputable an eyewitness as Lillian Rogers Parks admitted in her autobiography "My Thirty Years Backstairs at the White House" that she had heard them.Margaret Truman, daughter of President Harry S. Truman, said she heard a specter rapping at the door of the Lincoln Bedroom when she stayed there, and believed it was Lincoln.