April 2, 1925
The Oklahoma State Legislature adopted a new design for the state flag on April 2, 1925. Depicting an Osage shield with a calumet (peace pipe), olive branch, crosses, and eagle feathers, artist Louise Funk Fluke created the design to symbolize a people united by peace. The word Oklahoma was added in 1941.
The Oklahoma Statutes, available on the Oklahoma State Courts Network, describe the flag in greater detail.
See the Encyclopedia of Oklahoma History and Culture for more information about Louise Funk Fluke.
Photo credit: Oklahoma State Archives, MS-51 Flags Over Oklahoma