Two stamps can be found on many concentration camp documents in the Arolsen Archives: the I.T.S. Foto stamp and the Carded stamp. Both of these stamps date from the post-war period. The “I.T.S. Foto No.” stamp was used on documents that were photographed by US authorities in the early 1950s to preserve the information they contained. This stamp only means that the document has been processed. It does not mean that there are photos of the person concerned.
The “Carded” stamp is usually found on lists of names: it means that the list has been added to our Central Name Index enabling individual names to be found quickly on a list. This activity was known internally as “carding”. It consisted of transferring all the names mentioned in a document to individual index cards.