In 1935 Emanuel Hijman Bromet was a functionary for the communist 'Roode Vakbonds Oppositie'.
Archief Centrale Inlichtingendienst
According to a list with shops of Jewish owners, compiled by the Amsterdam police in 1940, this family had an upholstery business, address: Dusartstraat 35 in Amsterdam.
Abstracts of the police archives which are currently at the Amsterdam municipal archives