Abraham Lincoln often consulted the spirit world for advice. One such example was the evening of February 5, 1863, when the President and his wife attended a séance at 3226 N Street in the Washington, DC.
Through the mediumship of Nettie Colburn Maynard, a ghost named 'Old Dr. Bamford' manifested and advised the President on military strategy. "Go in person to the front...and show yourself to be the Father of Your People," Bamford demanded while adding "it will unite the soldiers as one man". Several weeks later Lincoln made an inspirational trip to Union Army camps in Northern Virginia.
During the séance it was also reported that a grand piano levitated across the room. The President investigated the floating instrument and "expressed himself perfectly satisfied that the motion was caused by some invisible power".
Lincoln continued to attend Spiritualist circles throughout his presidency and even hosted several séances at the White House before passing away in 1865.
Maynard, Nettie Colburn. Was Abraham Lincoln a Spiritualist? (1891)