20 ILCS 3110/8

The gross total income from (1) the sale of bonds, (2) charges, fees or rentals, and (3) all other revenue derived from any project undertaken pursuant to this Act shall be paid to the Treasurer of the State of Illinois. Said income shall be held by him in trust for the purposes of this Act, in a special fund known as "The Public Building Fund." The State Treasurer shall be ex officio custodian of such fund. Disbursements shall be made from such fund upon the order of the Authority.