This is the United States Emergency Broadcast System with a message about emergency mail service and how it will reunite separated families. If because of the emergency you become separated from or do not know the whereabouts of family members, relatives, employers, employees, or government agencies... the Postal Service will provide the principal, and perhaps the only, means available for reestablishing such contacts. Welfare offices and post offices… which are still functioning after an attack will furnish persons whose regular post offices or home addresses are no longer usable with two types of important cards with instructions for filling them out. One is called a Safety Notification Card (Pictured); the other an Emergency Change of Address Card (Not Pictured). The Safety Notification Card should be completed and mailed promptly to the last known address of those whom it is important for you to contact... The Emergency Change of Address Card should be addressed to the Postmaster at the post office where you normally received your mail at the time of the attack, even though that post office is known to be out of operation...