Did you get hold of Ron Clarke's "The Lonely Breed"? It has a marvelous chapter on exactly this race.
Somehow this also reminds me of the Soviets' manipulation of a "scoreboard" in their first participation at the Olympics (1952?). Check out histories of the modern Olympic Games...
And over the years, of course, the Olympic single sculls between Americans and Soviets. I believe Halberstam (in "The Amateurs") touches on this competition.
In track, the Soviets in their early Olympics consciously focused on events that Americans did not. At the time, this meant any events not then in most American college meets--essentially the flat distance races and SC, RW, HT, TJ, decathlon--and the Soviets tended to steer their best athletes into those.
Of course, this brings to mind the classic Tass headline about a Soviet defeat in the US/USSR dual: "Soviets finish second; Americans next to last." The Soviets actually won most, if not all, because their women (including the "Press brothers") regularly stomped ours.
I, too, have been frustrated by youTube. This was the best I could find:
http://www.youtube.com/watch?v=L_3SExTFaJE
Wrong year (1962), I know, and you have to wade through a lot of other stuff to get there, but it does give some flavor of the times.
Finally: Sports Illustrated, back when it covered track (Bannister was the first SI Sportsman of the Year!), had some excellent articles on the duals. I remember that they had a great shot of GL breaking the tape in the 1964 meet.
Yes, I realize you likely have gone to all of these sources. I wonder what the major newspapers' coverage of the meets was like? Lots of jingoism?