Salomon Haag was a son of Joseph Haag and Christina Hart. He married Betje Lopes Cardozo in 1919.
Stadsarchief Amsterdam, archiefkaart Salomon Haag
In addition, a Jokos file (number 40609) on this household is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.
This person is commemorated on a memorial in Amsterdam. More information on this memorial can be found (in Dutch) on the website of the Nationaal Comité 4 en 5 mei.