In 1941 and 1942 prisoners admitted into Auschwitz were not only given prisoner numbers but also photographed, the last view of persons almost all of whom perished. While some of these mug shots were lost, many were saved. 608 of these mug shots with the identities of the persons who were photographed have been published in Giuseppe Zambon's book Abel's Gesichter Auschwitz and I recommend that researchers who had relatives who were murdered in Auschwitz take a look at this book on the admittedly long shot that a name/face may be of interest.
