AA "Flagship Bristol" info wanted
An old family photo with no date in it shows the nose of American Airlines "Flagship Bristol" at the Tulsa, Oklahoma, Municipal Airport -- the name is painted on a hangar.
I just wanted to know what years this particular aircraft flew for AA as one way of helping to date this photo. I did Google this aircraft and found a website -- "john2031.com" -- that has a page on DC-3s that features this particular aircraft. She apparently was a DC-3. According to that website she only flew for AA from 1945 to 1947, but I am not completely sure that is correct, and I cannot find any other info on that particular aircraft anywhere else on the web. The other site said her tail number was N33317, and her Construction Number was 11636.
So I am asking here, in case anyone has any further info on this aircraft. Thanks in advance for an info anyone has!