16 U.S.C. § 362
Leases of bathhouses and sites; supply of water
The Secretary of the Interior is authorized and empowered to execute leases to the bathhouses and bathhouse sites in the Hot Springs National Park for periods not exceeding twenty years, and at an annual rental of not less than $30 per tub for each tub used in any bathhouse. Said annual rental shall be payable quarterly in advance, at the office of the Government superintendent of said property, in Hot Springs, Arkansas. The same rate for water rent shall be charged for the water to all parties receiving the same, whether in or outside said park. After the Army and Navy hospital bathhouse, the public bathhouse, the bathhouses which are authorized in the said park, the Arlington Hotel, and the bathhouses outside said park authorized on or before