Of the first flight of a liquid-propellant rocket.

If you want to see it you have to go to Roswell, NM. they have bits of it on display, along with the second rocket. This was built out of pieces of the first since the Smithsonian didn't want it ( Insert Wright Flyer quip here). Anyway after his death, Esther was contacted by the Roswell Woman's Club and asked if there was anything of Robert's she cared to donate to the Roswell museum.
My two regrets of my visit there were the exhibits were being redone so there wasn't signage on everthing and that when I turned the corner and there was "the stand". No signage so I don't know if it was the original or a model but I stll regret that I didn't have my picture taken striking the "pose" with it.