If the mortgage debt be secured by the obligation, or other evidence of debt, of any other person than the mortgagor, the plaintiff may make such other person a party to the action, and the court may render judgment for the balance of such debt remaining unsatisfied, after a sale of the mortgaged premises, as well against such other person as against the mortgagor, and may enforce such judgment as in other cases by execution or other process.

Source: CCivP 1877, § 619; CL 1887, § 5433; RCCivP 1903, § 658; RC 1919, § 2900; SDC 1939 & Supp 1960, § 37.2902.