Another, much more detailed profile of Ed:http://www.globerunner.org/01/extraordinary-mr-whitlock/
So it turns out, that for a few years, age 18/19, I actually had a faster marathon PR than Ed! Ed was 45 and his son was 14, and the son wanted to run marathon. The two ran 3:09, about 5 months after I ran my first in 2:53. Keep in mind that at the time, Ed was about 14 seconds faster than me over 1500m and 10 seconds over 800. No doubt he could have run much faster for the marathon. In fact he ran 2:52 the next year, then went on to win a world 1500 AG title in '79, as well as a lifetime PR 2:31 marathon, age 48. A year later, I ran my own lifetime PR marathon in 2:38, age 22.
Anyway, great detail in the above biopic!