On Friday 11 January 2013, Daniela Hooghiemstra defended her dissertation De geest in dit huis is liefderijk. Het leven en De Werkplaats van Kees Boeke (1884-1966) at Amsterdam University.
Her research is mainly based on the archives of Kees Boeke and his wife Beatrice, a scion of the Cadbury Chocolate dynasty, and the Werkplaats Kindergemeenschap at the IISH.
Kees Boeke is known as an innovator of education, peace activist and founder of 'De Werkplaats' in Bilthoven, an alternative school where the Dutch princesses Beatrix, Irene and Margriet were educated. The pupils of this school were called 'workers'.
Through the mediation of Daniela Hooghiemstra, the IISH recently received an accrual to both archives. The accrual includes a large amount of minutebooks of De Werkplaats and various intriguing photographs.
Very special is this photo of the elderly couple Boeke in the early sixties, demonstrating for peace and against nuclear weapons.
Daniela Hooghiemstra's book is published by De Arbeiderspers.