The board of managers shall have full power to maintain, operate, and rent Memorial Hall and the grounds, for purposes not inconsistent with the memorial character of the building, and shall determine what supplies, materials, decorations, or improvements are required in the building and grounds, and the design and character thereof; and, when so determined by the board, the president and secretary shall certify the same to the county commissioners, together with designs, plans, and estimates of the cost of any proposed improvement or decoration. The county commissioners shall, thereupon, make all contracts for supplies, materials, decorations, or improvements, in the manner now provided by law.
16 P.S. § 12351