California Code, Public Resources Code - PRC § 7521

The swamp and overflowed lands belonging to the State were sold prior to September 19, 1939, at the rate of one dollar ($1) an acre.  Twenty per cent of the principal is payable within 50 days from the date of the approval of the survey by the commission.  The balance, bearing interest at the rate of 7 per cent per annum, payable annually in advance, is due and payable one year after the passage of any act of the Legislature requiring such payment, or before, if desired by the purchasers.  Bonds or warrants of reclamation districts having an outstanding indebtedness are receivable at par in payment for lands in such districts.