The so-called Sterbebücher of Auschwitz includes nearly 69.000 official certificates of death, made out in the camp between July 1941 and December 1943.
The Sterbebücher were published in 1995 (J. Debski (red), Sterbebücher von Auschwitz / Death books from Auschwitz, 3 vols, Staatlichen Museum Auschwitz-Birkenau, 1995) and can also be consulted on-line.
Only for persons who were officially registered in the camp, in most cases as a forced labourer, a death certificate was drawn up. For those who were murdered upon arrival a registration was not applicable.
This data base uses the partially preserved Death Books (Sterbebücher) of Auschwitz Concentration Camp prisoners. The 46 volumes of political department (camp Gestapo) record the deaths of almost 69,000 prisoners who were registered in the camp and who died between July 29, 1941 and December 31, 1943. Their names have been entered in the data base.
Limited number of records
When using the data base, please remember that the death certificates cover only registered prisoners who died in the period mentioned in the previous paragraph. The overwhelming majority of victims, mostly Jewish, perished in the gas chambers immediately after arrival, without being entered in the camp records, and without their deaths being noted in the German documents.
Source: http://www.auschwitz.org/en/museum/about-the-available-data/death-records/sterbebucher/
(this text in the Dutch language is a very brief translation of the English text, which can be found and read via the above mentioned link).