An in memoriam column written by Shirley Povich of the Washington Post on Zale's passing.
A look at the Zale-Graziano trilogy (with a nice picture of Don King down the right-side rail -- bonus!)
I wasn't able to find the first two Zale-Graziano fights online, but this
youtube clip of III, even if it did not quite live up to the first two, provides excellent evidence of Tony's chin (in the second round) and his power (in the third).