According to a list with shops of Jewish owners, compiled by the Amsterdam police in 1940, Simon Mossel had a bookshop, address: Oudemanhuispoort 12 in Amsterdam.
Abstracts of the police archives which are currently at the Amsterdam municipal archives
In addition, a Jokos file (number 40465) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.