That was a reference to the Robert Johnson song Traveling Riverside Blues. Apparently Johnson might have himself taken it from a Roosevelt Sykes song.

If we consider the gun ‘attached’ to the handler, would that put the blame back on the person? Or maybe we ought to consider the handler as part of the gun itself.

Biscoffius

If released in the 50s counts, my vote is for In a Lonely Place (it was made at the end of the 1949).