Abraham Plas was a son of Arie Joseph Plas and Vrouwtje Sons. He married to Heintje van Rheenen op 6 January 1904 in Amsteram. They had four children: Arie, who survived the Holocaust, Anna, who died as a 5 months old baby, Simon Plas and ((492906|Joseph Plas.
Municipal Archive of Amsterdam, archive card of Abraham Plas.