Julia and Andy Warhol as photographed by Duane Michals (detail). The title of author Elaine Rusinko’s biography “Andy Warhol’s Mother” might at first seem just book-jacket shorthand, or even a bit of ...

1. Here’s the story, as normally told. In the summer of 1949, when Andrew Warhola arrived in New York from his native Pittsburgh, almost the first thing he did was lose the too-ethnic “a” at the end ...