55 ILCS 5/5-31007
The board of any museum district, when requested by the treasurer, shall designate a bank, banks or other depository in which the funds received by the treasurer may be placed.
Each designated depository shall furnish the museum district with a copy of all statements of resources and liabilities which it is required to furnish to the Commissioner of Banks and Real Estate or to the Comptroller of the Currency. No bank is qualified to receive museum district funds until it has furnished the museum district with copies of the 2 most recent statements.
The treasurer of the museum district shall be discharged from responsibility for all funds while they are in a designated bank or depository, except that the amount of such deposits shall not exceed 75% of the capital stock and surplus of such bank or depository. The treasurer shall not be discharged from responsibility for any funds deposited in excess of such limitation.
When a bank has been designated as a depository it shall continue as such until 10 days after a new depository is designated and is qualified. When a new depository is designated, the museum district shall notify the sureties of the treasurer of that fact in writing at least 5 days before the transfer of funds.
55 ILCS 5/5-31007