Like many another patient suffering with a chronic disease, the city of Denver put off calling a doctor until its ailmenta corpuscular clotting of automobile traffic in its downtown arteriesgrew almost unbearable. By 1947, its regular morning and evening attacks were getting progressively worse, and it had exhausted all the known home remedies. In despair it hired a greying, bucktoothed police captain from Flint, Mich, named Henry W. ("Hank") Barnes and asked him to administer some pain killer.
It was a wise choice. Traffic Doctor Barnes had come by his odd craft almost by accident. He had started out in...