South dakota constitution
Article XI: revenue and finance
Section 1

Provided, that for the purpose of establishing, installing, maintaining and operating a hard fiber twine and cordage plant at the state penitentiary at Sioux Falls, South Dakota, the Legislature shall provide for a tax for the year 1907 of not to exceed one and one-half mills on each dollar of the assessed valuation of all taxable property in the state, as ascertained by the last assessment made for state and county purposes.