Well, he was a black-haired guy. They can appear bearded or mustachioed quicker than blonds and redheads. In the movie Napoleon Dynamite, Napoleon asks his classmate Pedro how long it takes him to grow a mustached. Pedro replies "Oh, a couple of days." Pedro was the new kid in school, having moved to Idaho from Mexico.
Having said that, that first picture appears "touched up" if not photoshopped. And how do we know how accurate the dates are.
(And I'm not even going to suggest that the second one is William Shears Campbell!)