Interesting 3 different packet reception notificatin postcards from Ghetto Theresienstadt. These postcards were sent with a short message from receiver to the sender so that sender know parcel was received. Postcards are all sent from Terezin model ghetto/concentration camp, in Czech Republic. Man who was inmate there was called Karl Fuchs and parcels were sent by his wife in Wien. All are different models dated 1943 and 1944.