The number of the CM/1 application that the person submitted to the IRO for recognition as a DP is noted on the Control Center cards. IRO employees wrote whether they had received an application or forwarded one to another authority. If “CM” for Care and Maintenance program is found on a card, it is worth conducting further research in the Arolsen Archives. Though not all of the CM/1 applications that were ever filled out have been preserved, there are still around 350,000 CM/1 applications and their corresponding folders in the Arolsen Archives.