Wyoming officially entered the Union as the 44th state on July 10, 1890. This flag, with its added 43rd star, names Wyoming as the 43rd state. The U.S. House of Representatives and the U.S. Senate passed the bill of Wyoming statehood after long deliberations but by that point, Idaho had already become the 43rd state. When President Harrison signed the Statehood Bill on July 10, 1890, Wyoming became the 44th state.
As the Statehood Bill moved through Congress, communities across Wyoming celebrated statehood preemptively. This led to the creation of flags with 43 stars, naming Wyoming as the 43rd state. When statehood was achieved, these flags could no longer be used.
This flag was discovered folded in a scrapbook in the Downey Family collection.
Item: American Flag, undated, box 6a, Coll. #10555, Downey Family Papers, University of Wyoming, American Heritage Center.