A second plaque on the outer wall of the former camp reminds visitors that Dickmann was just one of some 900 Witnesses of Jehovah who suffered in Sachsenhausen for their beliefs.
Vēl viena plāksne, kas atrodas uz bijušās nometnes ārējās sienas, atgādina, ka Dikmanis bija tikai viens no apmēram 900 Jehovas lieciniekiem, kuri Zaksenhauzenē cieta savu uzskatu dēļ.