Possibly it was one of the Houston St. warehouse guys, Franklin Wester or Gordon Smith. I'm working on a distant memory from my ROKC days around 2013, but I think neither of them acknowledged watching the motorcade. This photo looks like it was taken around 1:00 PM, so perhaps one of them walked up to the Depository to see what was going on. Just a guess. As far as I know there are no pictures of Wester or Smith, nor even Eddie Shields, who was the foreman down there. A bookkeeper in his 60s, H.S. Aiken, kept his office down there. Charles Givens occasionally also worked down there.