Me again. I just found the reference. It's Iowa Code 614.21 - Foreclosure of Ancient Mortgages. This section states "no action shall be maintained to foreclose or enforce any real estate mortgage, bond for deed, trust deed, or contract for the sale or conveyance of real estate" AFTER either: 1)Twenty years from the date therof, as shown by the record of such instrument (date of filing), or 2)The record of such instrument shows that less than ten years have elapsed since the date of maturity of the indebtedness (unless there has been an extension of the instrument, then the new statute of limitation date is 10 years form the date of the extension).