History: Reuben Gray, inventor of the horse racing starting barrier, works on the model, 1955, [1100x863]

https://i.redd.it/qleu46fyi9d01.jpg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/7u3xcw/reuben_gray_inventor_of_the_horse_racing_starting/?utm_source=ifttt