1. Idaho's State Flag Was Adopted on April 23, 1907: On this day, the state of Idaho officially adopted its state flag. The design features a blue field with the state's seal in the center and a yellow outer border. Legend has it that the blue field represents Idaho's sky, the mountains are represented by the white star, the gold represents the state's resources, and the words "State of Idaho" signify Idaho's official name.

2. John V. Evans Jr. Became Idaho's 27th Governor on April 23, 1977: John V. Evans Jr., a Democrat from Malad City, was sworn in as Idaho's 27th governor on this day in 1977. As governor, Evans worked to diversify Idaho's economy and improve education. He also supported the state's first human rights commission.

3. The Idaho State Capitol Building Was Dedicated on April 23, 1913: After three years of construction, the Idaho State Capitol building was dedicated on April 23, 1913. The neoclassical building features a dome modeled after the United States Capitol, and it is listed on the National Register of Historic Places.

4. Idaho's First Territorial Governor Was Appointed on April 23, 1863: President Abraham Lincoln appointed William H. Wallace as the first territorial governor of Idaho on April 23, 1863. Wallace served until 1864 when he was ousted due to political pressure from within the territory.

5. The Idaho Shakespeare Festival Was Founded on April 23, 1977: On April 23, 1977, the Idaho Shakespeare Festival was founded by a group of actors, directors, and educators. Since then, the festival has become a cultural institution in Idaho, presenting a season of plays every summer at an outdoor amphitheater near Boise.