The county seat of Cibola county shall be established at the municipality of Grants. The board of county commissioners of Cibola county after their appointment as provided in this act N.M. Stat. Ann. § 4-3A-1 to 4-3A-14, shall select, designate and acquire a tract of land within that city as a place upon which shall be built the courthouse and public buildings of the county of Cibola.