Mo. Rev. Stat. § 262.240

At least three months before the holding of any annual fair the director, at the direction of the commission, shall prepare a catalogue and list of premiums offered. He shall print the same in proper form, with the rules and regulations governing entries, exhibits and the payment of premiums; and he shall, at least three months before the opening of the fair, cause as many copies of the catalogue as the commission directs to be distributed throughout the state, and he shall send a copy to any person making request therefor.