Arend Joosten was unmarried. He was a baker and lived in Jutphaas. He helped run the underground newspaper 'De Waarheid', first in Utrecht and later in Arnhem and Epe. He was caught in Epe on 17 August 1943.
NIOD, Erelijst Verzet en Koopvaardij, database made by J.W. de Leeuw
In addition, a Jokos file (number 60093) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.