Most modern day fans of the Green Bay Packers are likely to know of Don Hutson because the practice facility is named after him. He's on the short list of the greatest receivers to ever play in the NFL. In 1963, he was a charter member of the Pro Football Hall of Fame:
When Hutson retired in 1945 after 11 superb seasons, he held 18 NFL records, including 488 career receptions.
That was 200 more than his closest competitor. Hutson invented modern pass receiving. He created Z-outs, buttonhooks, hook-and-gos, and a whole catalog of moves and fakes.
And he was a two-way player. He played safety for 5 seasons, and averaged 5 INTs per season (in 10 or 11 game seasons).