Booth's Day on April 14

[SSlater]

I'm not up-to-date on this topic, but I do have a question. Didn't I read that Booth had a pocket full of wood chips, when he died?
My unfounded guess would say that he "saved the chip" from the peep-hole that he drilled in the door. He didn't want "chips" all over the floor that would draw attention to the peep hole.
Does anyone have another source for the "wood chips'?