Chicago Bears Hall of Fame center George Trafton circa 1930. Six times during his 12 seasons he was named to various all-league teams. He also earned, and most observers of the day say rightfully so, a reputation as rough player who was not afraid to get into an on-field scrap. Trafton, however, was far more than just a roughneck. He was a skilled defensive player who had the moves of a halfback to go with his size and strength. He was one of the first centers to rove on defense and the very first on offense to center the football with only one hand. (Photo by Pro Football Hall Of Fame/NFL)

Robert "Cal" Hubbard, was one of the most feared lineman of his time, a Rookie star with the New York Giants in 1927. He played tight end with the Giants, switched to tackle with Packers, where he anchored the line for Packers' title teams, 1929-1931. He excelled as a blocker, backed up line on defense, was extremely fast, strong and All-NFL six years, 1928-1933. Was named to the NFL's all-time offensive tackle, in 1969. (Photo by Pro Football Hall Of Fame/NFL)

Guy Chamberlin was one of the finest ends of his time. He was big, tall and fast, excellent on both offense and defense and a 60-minute player. In his six coaching seasons, five of which were spent as a player-coach, Chamberlin also won four NFL championships for the Canton Bulldogs in 1922 and 1923, the Cleveland Bulldogs in 1924, and the Frankford Yellowjackets in 1926. (Photo by Pro Football Hall of Fame)

Laverne Dilweg was graduated from the law department of Marquette University in Milwaukee, Wisconsin, in 1927, and was admitted to the Wisconsin Bar in 1927. In 1926, Lavvie played for the professional football team the Milwaukee Badgers. From 1927-1934, while practicing law, Lavvie played for the Green Bay Packers, and was recognized as one of the best ends in the National Football League during the 1920s and 1930s. His Packers won NFL championships in 1929, 1930, and 1931. (Photo by Pro Football Hall of Fame)

Pro Football Hall of Fame Class of 1963 Earl "Curly" Lambeau founded and played for the Green Bay Packers in 1919 and continued coaching and managing until 1949. Lambeau revolutionized football by introducing the foward pass on offense, which became an integral part of the game. (Photo by Pro Football Hall Of Fame/NFL)

Of all the records in the history of the National Football League, the one that has survived the longest was set on November 28, 1929, when Chicago Cardinals fullback Ernie Nevers, scored every one of his team�s points (six touchdowns and four extra point conversions) in a 40-6 rout of the Chicago Bears. The next week, the former Stanford University star again scored all his team�s points for a two-game total of 59 solo points. (Photo by Pro Football Hall Of Fame/NFL)

DECATUR, IL - SEPTEMBER 9: During his incredible career, George Halas filled the shoes of owner, manager, player, and promoter, and was an influential leader among the NFL�s ownership. It was, however, as a coach that he excelled and was best known. He ran the 1920 Decatur Staleys (pictured middle, front row). (Photo by Pro Football Hall of Fame)

Joe Guyon, an American Indian from the Chippewa Tribe. After playing on Georgia Tech�s national championship team in 1917, Joe signed to play pro football with the Canton Bulldogs in 1919. After the NFL was organized in 1920, Guyon played seven more seasons with six different teams. In 1927, Guyon became a Giant and he played a major role in leading the New Yorkers to the 1927 NFL championship. (Photo by Pro Football Hall of Fame)

In 1922, while playing against George Halas, the player-coach of the Chicago Bears, Ed Healey dominated his opponent so thoroughly Halas decided he had to have this player on his team. After the game, he bought Healey for $100. Blessed with good speed for a tackle, Healey was involved in at least two unforgettable plays as a Bear. In 1924, "Big Ed" ran more than 30 yards to nail his own teammate, who had run the wrong way with an intercepted pass, just short of the wrong goal line. Two years later during the Bears' long barnstorming tour that featured the famous Red Grange, Healey made a touchdown-saving play before 60,000 fans, a play he called his greatest pro football thrill. (Photo by Pro Football Hall of Fame)

Pete Henry was a major contributor for the Bulldogs, who won NFL championships in both 1922 and 1923. Among his game heroics was a 40-yard field goal that tied Akron, 3-3, and preserved Canton's unbeaten season in 1922. Henry did much more than just block and tackle with monotonous efficiency. Versatile, he was even used occasionally on a "tackle over tackle" play. "Fats," as he was also known, was a superior punter, placekicker and dropkicker and, for many years held a spot in the NFL record book for his kicking exploits. (Photo by Pro Football Hall of Fame)

During Heartley "Hunk" Anderson's four varsity seasons, Notre Dame posted a 31-2-2 record. After a four-year career with the Chicago Bears, "Hunk" returned to Notre Dame where he was a line coach and later head coach. Pictured here, Hunk (second from left), sits next to Hall of Famers Harold "Red" Grange (second from right), and George Trafton (far right) of the Chicago Bears during a 1925 game played during the team's barnstorming tour showcasing Grange. In the beginning of December, the Bears played eight games in 12 days, and then played nine additional games in the South and West. (Photo by Pro Football Hall Of Fame)

Running back Jim Thorpe of the Canton Bulldogs leaps into the fray during a 1915 game against the Columbus Panhandles. In 1920, when the National Football League was organized, the charter members named Thorpe league president. He could run with speed as well as bruising power. He could pass and catch passes with the best, punt long distances and kick field goals either by dropkick or placekick. Often he would demonstrate his kicking prowess during halftimes by placekicking field goals from the 50-yard line, then turning and dropkicking through the opposite goal post. He blocked with authority and, on defense, was a bone-jarring tackler. (Photo by NFL/NFL)

Decatur Staley's quarterback Jimmy Conzelman circa 1921. Conzelman began his post-college career as a member of the Great Lakes Navy team that won the 1919 Rose Bowl. One of his Great Lakes teammates was George Halas, who recruited him for his 1920 Decatur Staleys team in the newly formed American Professional Football Association. After one season with the Staleys, Conzelman moved on to the Rock Island Independents where he began his career as a player-coach. (Photo by Pro Football Hall Of Fame/NFL)

For 11 years, Mike Michalske was pro football's premier guard; a position many insist was the toughest job of all in the 1920s and 1930s. A guard in those days was expected to block the biggest opposing linemen head-on. Pictured here are Green Bay Packers Hall of Fame back Arnie Herber, Hall of Fame full back Clarke Hinkle, guard Charles Goldenberg, back George Sauer, Hall of Fame guard Mike Michalske, and Hall of Fame end Don Hutson circa 1930's. (Photo by Pro Football Hall Of Fame/NFL)

John "Paddy" Driscoll played for the Chicago Cardinals in 1920 to 1925 and the Chicago Bears in 1926 to 1929 as a quarterback, running back, punter, and drop kicker, and was selected as a member of the All-NFL Team six times throughout his career. He was a enshrinee into the Pro Football Hall of Fame in 1965. (Photo by Pro Football Hall Of Fame/NFL)

Chicago Bears Hall of Fame back Red Grange. After turning pro in 1925, University of Illinois running back Harold "Red" Grange, who ran with ghostlike speed and elusiveness, was the featured attraction at an exhausting �barnstorming tour� of the country winning thousands of new fans for Grange's Chicago Bears and pro football. When Grange's agent C.C. Pyle and the Bears ownership couldn�t agree on terms for the 1926 season, Pyle formed a rival American Football League with a team in New York called the Yankees that featured Grange. (Photo by Pro Football Hall Of Fame/NFL)

Steve Owen of the Kansas City Cowboys, Cleveland Bulldogs, and New York Giants. Owen first was a defensive standout then a coach for the Giants from 1933-1953. Owen was inducted into the Pro Football Hall of Fame Class of 1966. (Photo by Pro Football Hall Of Fame/NFL)

Walter Andrew Kiesling had a 34-year career as a pro player, assistant coach, and head coach. He was a rugged two-way lineman with six NFL teams. He starred on the Bears' unbeaten juggernaut in 1934 and was an All-NFL player in 1929, 1930, and 1932. In 1939 Keisling got his first head coaching opportunity with the Pittsburgh Pirates. He also co-coached the merged Pittsburgh-Philadelphia and Pittsburgh-Chicago Cardinals combined teams during World War II. (Photo by Pro Football Hall Of Fame/NFL)