Volgens de Zugangsliste Juden is Max Wijnberg na aankomst in Auschwitz ingeschreven als gevangene nummer 48461. Het is dus mogelijk dat hij niet - zoals aangenomen bij het opmaken van de overlijdensakte door de Zwolse burgerlijke stand - meteen na aankomst op 19 juli 1942 is omgebracht, maar nog enige tijd als dwangarbeider in het werkkamp verbleef.
Over de Zugangsliste Juden: http://www.auschwitz.org/en/museum/about-the-available-data/new-arrivals-documents/zugangsliste-juden/
A list of Jewish prisoners newly arrived stored in the Archives of the Auschwitz-Birkenau were made by prisoners working in the admissions office (Aufnahmebüro) of Political Department (Politische Abteilung). Names of Jewish newly arrived inmates are written according to the number order.
The document is a source of information about 10.089 Jewish men prisoners deported from different places to Auschwitz-Birkenau. Fields include: category ("Haftart") camp number ("Häftl. Nr." - Häftlingsnummer), name ("Name"), first name ("Vorname"), date of birth ("Geb. Dat." - Geburtsdatum) place of birth ("Geb. Ort" - Geburtsort) and occupation ("Beruf"). There are 6.828 names with an annotation about a fact of death. In the head of each list there are: the date of preparation of the document, date of arrival and the name of the German unite responsible for deportation to the camp. A list of Jewish newly arrived inmates is arranged chronologically in two volumes.