National Cultural Heritage Agency of Netherlands, Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
Berlin State Museums, National Gallery, Mark 1.0, https://creativecommons.org/publicdomain/mark/1.0/, Public Domain.
Digital Museum, School Planet, VM28329. Attribution to Creative Commons https://creativecommons.org/licenses/by/4.0/ Digitally Enhanced.
Digital Museum, School Planet, VM28303. Attribution to Creative Commons https://creativecommons.org/licenses/by/4.0/ Digitally Enhanced.
National Cultural Heritage Agency of Netherlands / Document No. 356, Photographer A. J. van der Wal, Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / Interbellum_0285, Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / Interbellum_0270, Photographer Sjaan van der Jagt, Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / 559,612, Paul van Galen, Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / 516102, Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / 332536, Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands via Europeana, Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
BALaT, Digitally Enhanced, Attribution to Creative Commons https://creativecommons.org/licenses/by/4.0/
Europeana. Digitally Enhanced, Attributions to Creative Commons https://creativecommons.org/licenses/by/3.0/
National Cultural Heritage Agency of the Netherlands via Europeana, Purchased by public subscription, Digitally Enhanced, Creative Commons License https://creativecommons.org/licenses/by-sa/4.0
Public Domain
National Cultural Heritage Agency of Netherlands / 559,587 Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / 559,587 Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / 559,588 Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / 559,587 Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / 559,588 Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / 559,586 Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
Public Domain
National Cultural Heritage Agency of Netherlands / 559,603 Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / 559,603 Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / 559,589 Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / 559,589 Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / 559,586 Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / 559,586 Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / 559,585 Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / 559,585 Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / 556,340 Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / 556,339 Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
Public Domain
National Cultural Heritage Agency of Netherlands / 556,338 Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / 556,337 Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / 556,336 Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / 556,335 Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / 556,334 Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / 556,347 Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / 556,346 Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / 556,345 Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
Public Domain
National Cultural Heritage Agency of Netherlands / 556,344 Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / 556,343 Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / 556,342 Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / 556,341 Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/