Grand Union Flag (1775) - The first National flag, which incorporated the Union Jack, was carried by the revolutionary forces.

Betsey Ross Flag (1776) - Legend has it that the Philadelphia seamstress based this flag on Washington 's design

15-Star Flag (1777) - Represents the first Colonies, this flag became the first official US flag on June 14, 1777

50-Star Flag (1960) - The 27th and current version of "Old Glory", which dates back to 1960.