ancillary data are often very diverse, may include maps, vegetation phenologies, and many kinds of information about human activities in the general area. human experts bring all these element s, plus their acquired skills and knowledge of related disciplines ...
Fritz Pollard and Bobby Marshall were the first black players in what is now the NFL in 1920. Pollard became the first (and until 1989, only) black coach in 1921; during the early-to-mid-1920s, the league used player-coaches and did not have separate coaching staffs.
Davis played college football for Syracuse University and was the first pick in the 1962 NFL Draft. Selected by the Washington Redskins of the National Football League (NFL) in December 1961, he was then almost immediately traded to the Cleveland Browns and issued number 45.