Please answer the following question: What key details about david m. nelson can be extracted from the following bio? Bio: david moir nelson -lrb- april 29 , 1920 -- november 30 , 1991 -rrb- was an american football player , coach , college athletics administrator , author , and authority on college football playing rules . he served as the head football coach at hillsdale college -lrb- 1946 -- 1947 -rrb- , the university of maine -lrb- 1949 -- 1950 -rrb- , and the university of delaware -lrb- 1951 -- 1965 -rrb- , compiling a career record of 105 -- 48 -- 6 . during his 15 years as the head coach at delaware , he tallied a mark of 84 -- 42 -- 2 and gained fame as the father of the wing t offensive formation . from 1951 to 1984 , he served as delaware 's athletic director . in 1957 , nelson was named to the national collegiate athletic association football rules committee and in 1962 became its secretary-editor , a position he held for 29 years until his death , the longest tenure in rules committee history . in this role , he edited the official college football rulebook and provided interpretations on how the playing rules were to be applied to game situations . nelson was inducted into the college football hall of fame as a coach in 1987 .
Answer:
- sport is football- coach team is hillsdale harvard -lrb- backfield -rrb- maine delaware- player years is 1939 -- 1941- birth date is 19 april 1920- bowl record is 1 -- 0- death date is 30 november 1991- awards is nff stagg award -lrb- 1989 -rrb- distinguished american award -lrb- 1984 -rrb- amos alonzo- name is david m. nelson- death place is newark , delaware- birth place is detroit , michigan- cfbhof id is 60006- admin years is 1951 -- 1984 1989 -- 1991- admin team is delaware yankee conf . -lrb- commissioner -rrb-- player positions is halfback- overall record is 105 -- 48 -- 6- championships is 1 yankee -lrb- 1949 -rrb- 3 middle atlantic -lrb- 1959 , ncaa 1962 -- 1963 -rrb- college division national -lrb- 1963 -rrb- 1- coach years is 1946 1965 -- 1947 1948 1949 -- 1950 1951 --- player team is michigan- cfbdwid is 1735- image is david m. nelson.jpg- cfbhof year is 1987