Peter Christoffersen studied social sciences with a focus on social geography and educational science. In 1985 he founded a bookstore in Bremen's Ostertor, which he ran until 2009. He has been a volunteer in the Stolpersteine project since 2011.
The series of publications deals with the biographies of the 652 Bremen Nazi victims whose memory has been honored by the STOLPERSTEINE BREMEN project since 2004. After the six volumes on the regions North (2013), Center (2015), Ostertor/Oestliche Vorstadt (2016), Schwachhausen/Horn-Lehe (2017), Findorff/Walle/Gröpelingen (2019) and Neustadt (2020) there is now also Volume VII Hemelingen / Osterholz published. Several essays illuminate historical sites and explain the situation of Jews in Bremen during the Nazi era.