A bedspread that may have covered Abraham Lincoln as he lay dying will be tested for his blood in Wisconsin on Tuesday, 150 years to the day after the 16th U.S. president was fatally shot while watching a play in Washington.

University of Wisconsin textile expert Majid Sarmadi will test the cotton bedspread to determine if human blood is on the Wisconsin Historical Society artifact.

"It is the most exciting thing to work on," Sarmadi said Monday. "It gives me goosebumps. . . . There is no single president in history that I regard more than Lincoln."