As I said, I have a 1972 Centurion. Today while riding I hit a pothole as I was coming down on my left pedal. I immediately felt like my pedal was moving around in ways it shouldn't. Stopping to look, I'd cracked the actual axle that the crank arms attach to.
I'm looking for information on where I can buy a replacement part for this, how much it will cost, as well as how to carry out the replacement.
Here's the actual crack:
Here's the pedal looking all bent: