Gentlemen,it is not located in the U.S.A.
Mr.Grubby, the origional photograph is cropped,so I am unable to provide details of the a/c type. I think it might be a Douglas type, as seacue suggests.
After some "digging", the aircraft could well be a DC6B. This airport was used as a second hub in a domestic network.
Last edited by sabredog; 4th Jun 2011 at 15:18.