(a) This account must include, until maturity, all long-term debt not otherwise provided for. This covers items such as receivers' certificates, real estate mortgages executed or assumed, assessments for public improvements, notes and unsecured certificates of indebtedness not owned by associate companies, receipts outstanding for long-term debt, and other obligations maturing more than one year from date of issue or assumption.

(b) Separate accounts must be maintained for each class of obligation, and records must be maintained to show for each class all details as to date of obligation, date of maturity, interest dates and rates, security for the obligation, and other similar items.