1.  Akron Pros (1920-1925)
        Akron Indians (1926)
2.  Buffalo All-Americans (1920-1923)
        Buffalo Bisons (1924-1925)
        Buffalo Rangers (1926)
3.  Canton Bulldogs (1920-1926)
4.  Chicago Cardinals (1920-1943; 1945-1959)
        Chicago-Pittsburgh Carpets (1944)
        Saint Louis Cardinals (1960-1987)
        Phoenix Cardinals (1988-1993)
      Arizona Cardinals (1994-present)
5.  Chicago Tigers (1920)
6.  Cleveland Tigers (1920)
        Cleveland Indians (1921)
7.  Columbus Panhandlers (1920-1922)
        Columbus Tigers (1923-1926)
8.  Dayton Triangles (1920-1929)
        Brooklyn Dodgers (1930-1943)
        Brooklyn Tigers (1944)
9.  Decatur Staleys (1920)
        Chicago Staleys (1921)
      Chicago Bears (1922-present)
10. Detroit Heralds (1920-1921)
11. Hammond Pros (1920-1926)
12. Muncie Flyers (1920-1921)
13. Rochester Jeffersons (1920-1925)
14. Rock Island Independents (1920-1925)
15. Cincinnati Celts (1921)
16. Evansville Crimson Giants (1921-1922)
17. Green Bay Packers (1921-present)
18. Louisville Brecks (1921-1923)
19. Minneapolis Marines (1921-1924)
20. New York Brickley’s Giants (1921)
21. Tonawanda Kardex (1921)
22. Washington Senators (1921)
23. Milwaukee Badgers (1922-1926)
24. Oorang Indians (1922-1923)
25. Racine Legion (1922-1924)
26. Toledo Maroons (1922-1923)
        Kenosha Maroons (1924)
27. Cleveland Bulldogs (1923-1925)
28. Saint Louis All-Stars (1923)
29. Frankford Yellow Jackets (1924-1931)
30. Kansas City Blues (1924)
        Kansas City Cowboys (1925-1926)
31. Detroit Panthers (1925-1926)
32. New York Giants (1925-present)
33. Pottsville Maroons (1925-1928)
        Boston Bulldogs (1929)
34. Providence Steam Roller (1925-1931)
35. Brooklyn Lions (1926)
        New York Yankees (1927-1928)
        Staten Island Stapletons (1929-1932)
36. Hartford Blues (1926)
37. Los Angeles Buccaneers (1926)
38. Louisville Colonels (1926)
39. Racine Tornadoes (1926)
40. Cleveland Bulldogs (1927)
        Detroit Wolverines (1928)
41. Minneapolis Redjackets (1929-1930)
42. Portsmith Spartans (1930-1933)
      Detroit Lions (1934-present)
43. Cleveland Indians (1931)
44. Boston Braves (1932)
        Boston Redskins (1933-1936)
      Washington Redskins (1937-present)
45. Cincinnati Reds (1933-1934)
46. Philadelphia Eagles (1933-1942; 1944-present)
        Philadelphia-Pittsburgh Steagles (1943)
47. Pittsburgh Pirates (1933-1940)
      Pittsburgh Steelers (1941-1942; 1945-present)
        Philadelphia-Pittsburgh Steagles (1943)
        Chicago-Pittsburgh Carpets (1944)
48. Saint Louis Gunners (1934)
49. Cleveland Rams (1937-1945)
        Los Angeles Rams (1946-1994)
      Saint Louis Rams (1995-present)
50. Boston Yanks (1944-1948)
        New York Bulldogs (1949)
        New York Yanks (1950-1951)
        Dallas Texans (1952)
44. Baltimore Colts (1950)
45. Cleveland Browns (1950-1995; 1999-present)
46. San Francisco 49ers (1950-present)
47. Baltimore Colts (1953-1983)
      Indianapolis Colts (1984-present)
48. Dallas Cowboys (1960-present)
49. Minnesota Vikings (1961-present)
50. Atlanta Falcons (1966-present)
51. New Orleans Saints (1967-present)
52. Boston Patriots (1970)
      New England Patriots (1971-present)
53. Buffalo Bills (1970-present)
54. Cincinnati Bengals (1970-present)
55. Denver Broncos (1970-present)
56. Houston Oilers (1970-1996)
        Tennessee Oilers (1997-1998)
      Tennessee Titans (1999-present)
57. Kansas City Chiefs (1970-present)
58. Miami Dolphins (1970-present)
59. New York Jets (1970-present)
60. Oakland Raiders (1970-1981; 1995-present)
        Los Angeles Raiders (1982-1994)
60. San Diego Chargers (1970-present)
61. Seattle Seahawks (1976-present)
62. Tampa Bay Buccaneers (1976-present)
63. Carolina Panthers (1995-present)
64. Jacksonville Jaguars (1995-present)
65. Baltimore Ravens (1996-present)
66. Houston Texans (2002)