HRE:
I remember a photo of Bill Baillie sticking his fact between Snell and John Davies, showing them the time. I thought it was for 1000m.
Okay, here's the statistics from "Journal of Running Science": This was written by professor Noguchi (you know what, I could not read his first name! I've been in MN too long...). He listed all the runners Lydiard "directly" coached (including Baillie's WRs) and some we know had definite influence from Lydiard (besides Dave Power, only 3 Finns were listed ourside NZ). According to professor Noguchi (no relation to Mizuki Noguchi), "Lydiard-influenced runners" held WRs in any event from July 7th, 1961, till August 3rd, 1985; a period of 24 years and 27 days (didn't Halberg hold WR before Rome?). Even for the Olympic events, between March 2nd, 1962, and July 13th, 1973; between July 5th, 1977, and April 7th, 1978; and between December 6th, 1981, and October 20th, 1984; total of 14 years and 11 months.
He concluded that "...most of Japanese coaches and runners were directly and indirectly influenced by Lydiard through his visit to Japan (Susumu Takahashi) and visit to NZ (Kiyoshi Nakamura) in 1963. So you could point out that most of Japanese runners achievement in the past 40 years are done by Lydiard 'grandchildren' and 'great-grandchildren' athletes." Incidentaly, if you include that, you need to include Toshihiko Seko's world 25k and 30k track records which I believe still stand.
HRE, I couldn't help it; I've got to show off--I received a "personal" message from Ron Clarke and he said that Lydiard's influence made him from "a club-level runner to an international-level runner."
Also, I think I mentioned this somewhere else; when Seb Coe was having glandular problem before 1984 Olympics, Lydiard was asked to consult his condition personally by Peter Coe. I know it because I was there in Lydiard's office when he received the phone call. He basically told him that the problem is too much anaerobic training.