Re: Inauspicious Beginnings: 1961 Schwinn American.
Corrosion can do some awful things. Use a torch if you're really set on keeping it original. And heat it up a lot. A LOT. Lightly heating it won't cut it if it's seized on bad enough. I've had tonget some bolts red/orange hot before they begin to turn.
But I would replace the crank and never speak of it. Who's going to know, aside from you?