It is easy to find a clip of the speech on YouTube, consisting of just a few short lines captured on a long ago day by the television cameras. The Lou Gehrig we see in black and white at Yankee Stadium on July 4, 1939 is movie-star handsome: tall, seemingly strong, a New York Yankee through and through. Joe McCarthy, the Yankees manager, takes Gehrig by the elbow and leads him to a bank of microphones behind home plate. The crowd of 61,000 gets to its feet. The emotion in the moment is obvious. Gehrig - native New Yorker, two-time...