A new study says there is no evidence that the stove pipe hat at the Abraham Lincoln Presidential Museum in Springfield ever belonged to Lincoln himself. The hat has been at the center of an investigation for years after some historians questioned its authenticity. The museum’s foundation paid 25-million-dollars for the hat back in 2007. The new study looked at DNA on the hat and the historical paper trail. Researchers are still hesitating to say however that the hat never belonged to Lincoln.