The Frankford Yellow Jackets were a professional American football team, part of the National Football League from 1924 to 1931, though its origin dates back to as early as 1899 with the Frankford Athletic Association. The Yellow Jackets won the NFL championship in 1926. The team played its home games from 1923 in Frankford Stadium (also called Yellow Jacket Field) in Frankford, a section in the northeastern part of Philadelphia, noted for the subway-elevated transit line that terminates there.