Wyo. Stat. § 8-3-103

It is the duty of the state historian to purchase not less than six (6) state flags. The flags shall be kept at the office of the state historian to be loaned under rules and regulations he prescribes to any citizen, or group of citizens, of the state for use on such occasions when the state is officially and publicly represented, or when public assemblies or gatherings are held. If any flag is borrowed from the office of the state historian, the citizen, or group of citizens, borrowing the flag shall deposit with the state historian a certified check in an amount sufficient to repair or replace the flag, if damaged or lost. No deposit is required of any officer of the state government who may be called upon to represent the state at any official function.