Lettersheet with green typewritten text and black handwritten script and a black mark slashing through the text Information Provided by Michael D. Bulmash: Censored letter sheet with both red censor stamp and green chemical censor from Johanna Groen- van der Vijgh- to her father, Albert Hendrik van der Vijgh, in Amsterdam. The six-line letter sheet is clearly specific for Jehovah’s Witnesses, referred to derisively on reverse in green German script as “Bibelforscher” or “earnest bible researcher”. Johanna had been married to Aron Groen, a bicycle repairman from a Dutch Jewish family who had been deported to Auschwitz in 1942 and perished. Johanna would survive the war. Johana’s sister Hendrika had been imprisoned in Ravensbruck as well, bu...