Lehman Waas was a son of Barend Waas and Schoontje Roe. He married in Amsterdam on 1 December 1921 to Margaretha Dingsdag, daughter of Salomon Dingsdag and Vrouwtje Pront. website www.wiewaswie.nl.
A Liro card exists for this person or family. The original cards are kept at the Nationaal Archief (National Archive) at The Hague.
In addition, a Jokos file (number 16682) on this household is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.