The flag for the city of Denison, Texas, was designed in 1873, and formally approved on November 13, 1968.
The meanings of each of the colors and the star are as follows:
The green band represents the green grass of Indian Territory (now Oklahoma, located only a few miles to the north)
The red band represents the nearby Red River
The white band represents Texas cotton fields
The black vertical stripe bisecting the bands represents the Missouri-Kansas-Texas Railroad (better known as the M-K-T or Katy Railroad, which is now part of the Union Pacific Railroad)
The star in the middle represents Denison.
