Failed ign switch in 67?

It's time to put the top down and the sunblock on! One problem.... the car won't start. The '67 Imperial was not driven at all between Christmas and March. It was driven twice earlier this month, both times without incident and starting the car was uneventful. I attempted to start the car today (79 degrees, light clouds, blue sky), but it would have none of it. The windows, horn, seats, etc all work as they should... but they are wired to do so without the key in the ignition. The battery is charged. The starter is new. Plugs and wires are good. None of the items on the car that should work with the key on do so. No wipers, instruments, no warning indicator lights on the dash light up at all, and more importantly, no starter engaging. Nothing happens if I move the key to any of the "on" positions. It appears that anything wired through the keyed ignition is not getting power. Not a whimper out of the starter if I fully turn the key (and connection is soli d). I suspect the ignition in the dash itself, but perhaps it's something else along the way. Any suggestions as to where to look and what else to suspect. Any solutions? All slathered in sunblock and no place to go.

Recommendations as to where to buy a new ignition switch? Napa? An Imperial only part?