Museum Catharijne Convent, date1900 - 1929, numberStCC dp864, Public Design.
Berlin State Museums, Art Library, Mark 1.0, https://creativecommons.org/publicdomain/mark/1.0/, public Domain.
National Cultural Heritage Agency, Document Number 319, Photo by G.J. Dukker, Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency, Document Number 541030, Photo by Serge Technau, Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
Photographer : Chris Booms, Cultural Heritage Agency of the Netherlands, Amersfoort, Document Number 11798-27004, Digitally Enhanced
Licensed under Creative Commons by SA 3.0 http://creativecommons.org/licenses/by-sa/3.0/
Cultural Heritage Agency of the Netherlands, Amersfoort, Document Number 0717
Digitally Enhanced, Creative Commons License 3.0 https://creativecommons.org/licenses/by/3.0/
Public Domain
Cultural Heritage Agency of the Netherlands, Amersfoort, Document Number 0018
Public Domain
Cultural Heritage Agency of the Netherlands, Amersfoort, Document Number R776
Public Domain
Cultural Heritage Agency of the Netherlands, Amersfoort, Document Number R1386
Public Domain
Cultural Heritage Agency of the Netherlands, Amersfoort, Document number 559,619, Purchased by public subscription, Digitally Enhanced, Creative Commons License http://creativecommons.org/licenses/by-sa/3.0/
Collection of the Cultural Heritage Agency of the Netherlands, Document number NK1542
Public Domain
Painter: Jan Dunselman, Photographer: Sjaan van der Jagt, Cultural Heritage Agency of the Netherlands, Amersfoort, Document Number 0693, Digitally Enhanced
Licensed under Creative Commons by SA 3.0 http://creativecommons.org/licenses/by-sa/3.0/
Photographer: G. J. Dukker, Cultural Heritage Agency of the Netherlands, Amersfoort, Document Number 340727, Digitally Enhanced
Licensed under Creative Commons by SA 3.0 http://creativecommons.org/licenses/by-sa/3.0/
Photographer : Sjaan van der Jagt, Cultural Heritage Agency of the Netherlands, Amersfoort, Document Number 0657, Digitally Enhanced
Licensed under Creative Commons by SA 3.0 http://creativecommons.org/licenses/by-sa/3.0/