[Billthedrill]

MacDonald said. "If it had been recognized, professor Gould would still be teaching at Harvard College today."

I suspect that's going a bit far, actually. He might still be fighting it but he'd be a very sick man at the very least. The assumption is that it hadn't metastasized at that point, and there's simply no way you can be sure of that.

[TFine80]

He was very sick the year before as well. He had to cancel several classes at one point. Probably the same time they took this X-ray.