I saw Bryan Swopes had a version of this picture in This Day in Aviation the other day but I lost the place and the reference. A quick Google search for “Mercury 7 F-106” brought a back a slightly cropped version of the picture, which is fine since in this case we’re looking at the men, not the aircraft.
I did a quick check on the F-106B in question (F-106B-75-CO Delta Dart – AF Serial 59-0158). The entry in Joe Baugher’s website makes for interesting reading. Apparently 59-0158 still exists and may be on the gate at Edwards AFB, having had a rather picaresque service life including a sojourn at AMARC. A pleasing footnote.