All property heretofore acquired by any such county by virtue of the provisions of various legislative acts for expositions and free fair purposes is hereby declared to be the property of such county coming within the provisions of this act, and is hereby placed under the custody and control of the board of county commissioners in such county the same as other county property, and to be used for the purposes of carrying out the provisions of this act, provided, however, that the board of directors of such exposition and fair shall have the right to lease or rent any of the property belonging to it, including all grounds, buildings and equipment of the exposition and fair, for any purpose, and upon such terms as they deem proper, during such time as the same is not being used for exposition and fair purposes, and use the proceeds of such lease or rental for the general purposes of this act.

Laws 1947, p. 6, § 14.