Hello,
With regard to "the aircraft on the right in the background "with the
large T-tail," since the C-141 didn't exist in 1954, I think what
you're actually seeing is shadows of the partially open hangar doors.
Of course, I could be mistaken. Also, I am the original poster and I
appropriated the image from the Wikipedia page on the B-47.

http://en.wikipedia.org/wiki/B-47