Hyattville History Discover Bonanza! This Year at Cowboy Carnival 2023 we have Kate Henrichsen presenting her research on Bonanza. She has dedicated a lot of time and meticulous research to this topic. Come learn and enjoy Bonanza in its early years "oil" you will be sorry you missed it! We will also showcase the Manderson-Hyattville 1960's reunion and our Military room presentations.