Jason,
It is true that Moore did 20 minute recovery jogs ( several days in a row in fact). Bowerman assesed each of his athletes capacity to handle training loads. IN addition, he was a strong advocate of consistent training over 1, 2 ,3 plus years. I don't have any websites to refer you to , but a few great books to read more in depth on Bowerman's methods are:
1) The Bowerman System - Walsh, (T&F News Book 1980)
2) High Perfromance Track & Field - Bowerman & Freeman ( 1992)
BTW, there are also several articles published by Dr. William Freeman on Bowerman's methods. Dr. Freeman actually was a grad student at UO during Bowerman's tenure and wrote his thesis on him. Artilces can be located in TRack & Field Quarterly Review during the late 80's - mid 90'3. Freeman probably knows more about Bowerman's "true methods" that have not had much publication. This is partly due to his study of the Bowerman System and his long time friendship that they had throughout Bowerman's life. Alot of folks on this board probably know Freeman for his work on periodization ( he wrote four versions ).
For now , here is an old article I found in an old track & field quarterly review from the 60's on The Oregon System:
Mon: Light Jog, 800M - 2 Miles
Tue: Longer Intervals at Date Pace, totally 3,000 - 5,000 Meters, on grass. Easy 2-4 mile run Hendricks Park, followed by 6-8x100M cut downs.
Wed: Up to 20 minutes of jogging ( Athletes restricted
to 20 minutes of recovery activity on easy days)
Thu: Shorter repetitions at Goal Pace, totaling 1600
Meters. i.e. 8x200M with 200M jog recovery, followed
by 30 Minutes fartlek run around hendricks park, followed
by 4x100M.
Fri: Same as Wed.
Sat: Test effort 800M, 1200M, MIle or 2 MIle, followed
by steady run of 4-6 miles, then 6-8x100M fast & relaxed
Sun: LOng Run on trails, ranging from 10-20 Miles ( nothing faster than 6:00 Mile)
The article does not mention any AM runs or warm ups, but from what I have been told by Freeman was Mon - Fri the middle distance guys ra between 1-3 miles very easy. some more ( 4-6 miles for guys like Burleson) some less ( like guys such as Keith Forman who got injured easy, more like
1 maybe 2 miles of jogging).