Gary Savage, “JFK First Day Evidence”, page 77 (quote of R.W. Livingston):
….“I am sure that Lieutenant Day, who was in charge of the Crime Lab, dusted the rifle that was found on the sixth floor of the School Book Depository, and lifted a partial palm print off the underside of the barrel after the rifle was taken apart. 2. They had the actual print there in the office that night. I compared it my self with Oswald’s palm print, and it looked to me like there was enough there to say yes, it was Oswald’s palm print. I think all the other people on the day shift had already looked at the palm print before I arrived that night, but I went ahead and looked at the palm print myself and was satisfied that it was Oswald’s.”