Louis de Haas was married to Lientje van Hes. He was a presser by trade and his wife was a needle woman. On 24 June their daughter Elisabeth was born in Westerbork transit camp.
Record of birth certificates of the Westerbork municipality, currently at the archives of Gemeente Midden-Drenthe in Beilen
In addition, a Jokos file (number 55958) on this household is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.