As usual pardon my ignorance
From Rob Caprio
On June 15, 1964, the same cartridge cases designated C47-C50, were shown by Special Agent Bardwell D. Odum to Pete Barnes, an officer of the Dallas Police Department assigned to the Crime Laboratory, and he identified his marking on two of two of these cases, which also bear the markings ?Q-74? and ?Q-77?
So these are the shells that Poe claimed to have received from Benavides and Poe sort of claimed to have initialed and are now being claimed by Odum to have been marked by himself? I thought I saw Odum received, or picked up, one of the Davis sister shells after that Sister located them for the officers some time after originally telling the officers of their approximate locations? Odum assisted in finding the other Davis sister shell? And Doughity the other? No officer was apparently able to find any of these shells without being directed to them or being picked up by the witnesses