According to this letter inmate number 10.005 Isidor Grünszpan, who was born at Kattowitz on 12 April 1905, was a “communist in his heart and soul”. Since early youth, Grünszpan was a member of communist organizations and while an inmate at Auschwitz he connected with other communist prisoners. With old comrades and other communist functionaries he formed a “Communist Clique”. His behavior toward other inmates was asocial and he only formed relationships if doing so resulted in advantages for him.

Like most concentration camp inmates, Isidor Grünszpan had been sentenced to a specific time in Auschwitz and this letter was written to try to ensure that he would not be released when his sentence had been served, even if someone, somewhere offered positive words in his behalf.