It took some doing, wiggling the key, handle, wire poker and finally my butt, and under much tugging, the cylinder came out. It is worn out but the operating end seems ok. There inside is the ribbed metal bar that the latch is supposed to raise.
I can move it easily up & down, figuring upwards is the way the lock wants it, but still can not move the handle. No more motion than when the lock was in place. Am I going to have to work my way into the trunk? That's a task! I see that there are replacement latches for the '40 sedan, but I've still got to get it open. Sigh.......