Everything Norman Rockwell ever did uses this composition device.
He would have his work space and probably in his mind drew a '+' and an 'x', the two symbols overlapping each other, so the whole thing is a bullseye of sorts. There was a center, and radiating quandrants.
Then, he would fill up the space with his figures, using those imaginary lines to give the thing a balance. All of his imagery is very solidly put together because of it.
In relation to this one, the bulls eye center is the bottom of the 'H' in Hancock. Then you can see the radiating lines. The woman's elbow follows the diagonal in the picture frame in the upper left corner.
The hancock sign starts the other diagonal line that the lean of the man completes. The '+' sign is easy with the horizontal division in the wall and the sight line of the man. The vertical is the lines in the paneling and the beer bottle.
I went through about three different versions of this drawing before I was happy with it... now I know why. Neat.