Boards of supervisors, governing bodies of incorporated cities and school districts, and all authorities having control of public lands within this State may on behalf of the county, city, school district, park area, or public agency convey, lease, or make available to districts, either gratuitously or for compensation, sites upon lands under their control or jurisdiction, for the erection and maintenance thereon by districts of assembly or memorial halls, buildings, and meeting places, whenever in the reasonable discretion of such board, body, or authority, such sites can be so conveyed, leased, or made available without inconvenience to the interests of the particular county, city, school district, park, or public agency.