1. In 1920, the first Oklahoma State Fairgrounds Arena was opened in Oklahoma City with a performance by the Ringling Brothers Circus. The arena would go on to host a variety of events for decades, including concerts, rodeos, and sporting events.

2. On January 17, 1936, a devastating flood hit Tulsa and the surrounding area, causing extensive damage and claiming the lives of over 20 people. The flood was caused by heavy rains that overwhelmed the levee system along the Arkansas River.

3. In 1955, the University of Tulsa became the first university in Oklahoma to desegregate, admitting African American students for the first time in its history.

4. On January 17, 1977, a massive blizzard hit Oklahoma, bringing record snowfalls and causing widespread power outages and transportation disruptions. The storm, which lasted for several days, resulted in several deaths and millions of dollars in damages.

5. In 2012, Oklahoma Governor Mary Fallin signed a bill that officially recognized the American Bison as the state animal of Oklahoma. The bison has long been a symbol of the American West and is an important part of the state's history and culture.