Dallas Cowboys logo simbolized by blue star. Here is what Wikipedia has written about Dallas Cowboys Logo:
The Dallas Cowboys’ blue star logo representative of Texas as “The Lone Star State” is one of the best known team logos in professional sports. The blue star originally was a solid shape until a white line and blue border was added in 1964. The logo has remained the same since. Today, the blue star has been extended to not only the Dallas Cowboys, but owner Jerry Jones’ AFL team, the Dallas Desperados that have a similar logo based on the Cowboys. The blue star also is used on other entries like an imaging facility and storage facility.