The title page you can search for, either by google or on Flickr itself, is Lockheed Constellation Military. It is maintained by the San Diego Air and Space Museum Archives.
I was able to find a couple of planes by BuNO comparison in my dad's flight log and BuNO's listed w/pics posted.
I also have a question, one that I may have asked before but don't remember. Please forgive me if it is a repost. I have noticed in my dads flight log for May 13,14 and 16 of 1963, he has Mercury listed in the remarks section. I know that was during the time frame surrounding Gordo Coopers flight. The plane logged was the WC-121N, BuNO 141323. Would this flight have been solely weather related? Just curious about the job performance for that.