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.
Jackie Robinson became the first black player in the major leagues in 1947, signing with the Brooklyn Dodgers. He was named Rookie of the Year in 1947, National League MVP in 1949 and a World Series champ in 1955.