1. On December 30, 1868, the United States Army attacked and destroyed a village of Cheyenne and Arapaho Native Americans near present-day Sheridan. The attack, known as the Battle of Pease Bottom, resulted in the deaths of 11 Native Americans and marked the beginning of the end of the Indian Wars in Wyoming.

2. In 1922, the first commercial airplane route in Wyoming was established between Cheyenne and Casper on December 30. The route was operated by the Wyoming Air Service Company and was a major milestone in Wyoming's aviation history.

3. On December 30, 1943, the Wyoming State Capitol Building in Cheyenne was severely damaged by a fire. The fire started in the basement and quickly spread, causing extensive damage to the structure. The building was eventually repaired and remains an important landmark in the state.

4. Legendary Wyoming cowboy, artist, and writer, Will James, passed away on December 30, 1942. James was known for his Western novels, including his most famous work, "Smoky the Cowhorse," which won the Newbery Medal in 1927.

5. In 2013, Wyoming's first wind farm dedicated to producing electricity for a specific company, the Happy Jack Wind Farm, began operations on December 30. The farm, located near Cheyenne, was constructed by Duke Energy and provides electricity to the Cheyenne Light, Fuel & Power Company. The wind farm is a significant step towards increasing renewable energy production in Wyoming.