Pennsylvania

The flag of Pennsylvania consists of a blue field on which the state coat of arms is displayed. On April 9, 1799, the Pennsylvania General Assembly authorized the use of the state coat of arms on flags for the state militia. These flags took various forms. The legislature eventually chose to create a standardized flag for general use, featuring a now-standardized coat of arms alone on a plain field of blue mandated to be the "same color as the blue field in the flag of the United States". This new flag was enacted by law on June 13, 1907.

Text modified from "Flag of Pennsylvania" on Wikipedia which is licensed under CC BY-SA 4.0.