Section 8. Leasing by Commonwealth.--The Department of Property and Supplies, with the approval of the Governor, is hereby authorized to enter into a lease for not more than ninety-nine (99) years with The General State Authority to acquire the use of the buildings and structures and any lands connected therewith and the furnishings and equipment thereof, for the purpose of having the same managed and operated by the Department of Public Instruction and the Public Service Institute Board.