
Northern Dancer ahead of Hill Rise races to the finish line at Churchill Downs to win the Kentucky Derby May 2, 1964. Photo by Jerry Cooke

Jockey Willie Hartack leads Northern Dancer to victory at the 90th running of the Kentucky Derby May 2, 1964. Coming in second is Hill Rise, ridden by Willie Shoemaker, followed by Roman Brother, at rail; The Scoundrel, and Quadrangle, from left. Photo by The Associated Press

Northern Dancer, left with the white nose streak, is running wide coming out of the back stretch while Hill Rise, far left, strains to keep up at Churchill Downs May 2, 1964. Photo by The Associated Press

Jockey Bill Hartack on Northern Dancer after winning the 1964 Kentucky Derby May 2, 1964. Photo by The Courier-Journal

A contact sheet by photographer Jerry Cooke shows owner E.P. Taylor and jockey Bill Hartack on Northern Dancer making their way to the winner's circle after winning the 90th running of the Kentucky Derby May 2, 1964. Photos by Jerry Cooke

Owner E.P. Taylor holds the reins with jockey Bill Hartack and Northern Dancer after winning the 90th running of the Kentucky Derby May 2, 1964. Photo by Michael Burns Sr.

Jockey Bill Hartack meets the press on Derby Day 1962, two years before riding Northern Dancer to win the Kentucky Derby on May 2, 1964. Photo by Gean A. Baron, The Courier-Journal