Thanks to everyone for comments. There are only two levers on the steering column for Chrysler, 1930 Series 66: one for lights and one for hand throttle. The spark advance/retard is located on the dash panel as a pull cable, original per Owner's Manual.
I found lever blanks from Jay Astheimer. A friend machined them to fit the column tube and using a screw/rivet/JB Weld combination, did a beautiful job of finishing the parts that have recently been installed and working nicely. Photos attached.
Now I'm looking for the "impossible": luggage mounts for the trunk, or drawings from which I can fabricate them myself.