Sorry to hear that Joe, hope you have another camshaft in your parts pile?
I too had a similar experience several years ago on a Green PA, but guess I was luckier than you as it sheared off the end slot on the oil pump drive shaft which was much easier to repair than the camshaft, so now I always drop the oil pump and drive shaft before attempting to turn the crank, I know it's hard to resist cranking as soon as you find a new toy, as that's how most test to see if an engine is seized. You will be amazed how much rust and crud gets into those oil pumps over the years of standing, then there is no way those gears will turn and something has to give.
Auctions with none running tractors are the worst place for this sort of thing, tractors dragged out from the back of the barn and every man admiring them wants to turn them over, I have often wondered how many get damaged that way.
Hope you are at the low point now, it will get better and hope you soon have her running Joe, all this will soon be forgotten then. Looks like it is one with Wallis cast into the block., they are a nice running little tractor.