1. In 1876, the Nez Perce War officially began in Idaho on August 3 when Chief Joseph refused to move his band onto a reservation as ordered by the US government.
2. In 1905, the Deschutes Railroad was completed in Idaho on August 3, connecting Bend, Oregon to the town of Bend.
3. In 1928, the first commercial airline flight arrived in Boise, Idaho on August 3, with Western Air Express landing at the Boise Airport.
4. In 1961, the Bannock War Centennial was celebrated in Pocatello, Idaho on August 3, marking 100 years since the end of the conflict between the US Army and the Bannock Native American tribe.
5. In 1973, Idaho State University in Pocatello officially became the first university in the state to offer a doctoral degree when the first Doctor of Arts in English was conferred on August 3.