George Plimpton with Mr. Puss. Photo by Nancy Crampton from the New York TimesThe Paris Review recently posted its entire archive of author interviews online. Here's the introduction to George Plimpton's interview of Ernest Hemingway, from the Spring 1958 issue:
HEMINGWAY
You go to the races?
INTERVIEWER
Yes, occasionally.
HEMINGWAY
Then you read the Racing Form . . . . There you have the true art of fiction.
More of that interview here, and the whole archive here.