That lands so acquired may be by such board of county commissioners leased to any person, firm, association or corporation, to be used for fairs, races, circuses, or other exhibitions, on such terms as in the opinion of such board of county commissioners shall be for the best interests of the county, but no lease or other contract affecting the use and occupancy of such grounds shall extend beyond the date of the expiration of the term of the member or members of such board whose term shall first expire.
K.S.A. 19-1546