The Office of Earnings and International Operations (OEIO) maintains a listing of all regular, first cycle (third of the month) checks sent to each consular office. The OEIO library maintains these listings by country and month of the check.

The Regional Financial Center (RFC) furnishes the certifying officer with voucher reports containing the check range and date of the checks for the blocks or computer runs. The OEIO library maintains these listings.

All checks returned to the RFC are cancelled immediately. The library in OEIO retains a record of all returned checks for seven years.