Leentje Visser was a daughter of the Deventer butcher Emanuel Visser and Betje Frankfort, a family with three children. She had another sister Sientje and a brother Jacob.
Leentje was unmarried.
Certificate of Birth of Leentje Visser, Civil Registry of Den Haag, family registration card of Leentje Visser and City Archive of Amsterdam, archive card of Leentje Visser and website www.wiewaswie.nl.
In addition, a Jokos file (number 7687) on this household is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.