Heintje Rootveldt, a daughter of Gabriel Rootveldt and Engelina van Bever, married Levie de Groot in Amsterdam on 8 November 1933, a son of Zacharias de Groot and Jetje Vleeskruijer.
City Archive of Amsterdam, archive card of Levie de Groot and Heintje Rootveldt .
In addition, a Jokos file (number 10055) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.