Ala. Code § 21-1-19

The Alabama Institute for Deaf and Blind shall have the power, when authorized by the board of trustees or the executive committee thereof, to borrow money for the purpose of paying salaries of employees, for the purpose of paying other expenses of operating said institute, and for the purpose of paying obligations already incurred in the operation of said institute and to pay interest on any sums so borrowed at a rate not exceeding the legal rate of interest. Any such loans may be evidenced by notes executed by said corporation and signed on behalf of said corporation by its president and by the chairman of the executive committee of the board of trustees. All loans made as authorized in this section shall be payable within 12 months from the date when such loans are made and shall be repaid from funds appropriated by the State of Alabama for the use of said Alabama Institute for Deaf and Blind. The aggregate amount of loans negotiated as authorized in this section shall not at any time exceed 15 percent of the moneys which said board of trustees or the executive committee thereof shall anticipate is to be received by said Alabama Institute for Deaf and Blind from the State of Alabama during the next 12 months.