National Digital Archives Poland, Year 1918 - 1932, public Domain.
BALaT, Licensed under CC BY 4.0 KIK-IRPA, Brussels (Belgium), cliché X046431] https://creativecommons.org/licenses/by/4.0/, https://balat.kikirpa.be/copyright/copyright_en-GB.php, Digitally Enhanced.
BALaT, Licensed under CC BY 4.0 KIK-IRPA, Brussels (Belgium), cliché X074387] https://creativecommons.org/licenses/by/4.0/, https://balat.kikirpa.be/copyright/copyright_en-GB.php, Digitally Enhanced.
Staatliche Kunsthalle Karlsruhe Collection, year unknown, Public Domain under (CC0) license.
Staatliche Kunsthalle Karlsruhe Collection, year 1855, Public Domain under (CC0) license
Christian Art; Monthly magazine for all areas of Christian art and art history, vol.7, 1910/1911, Public Domain.
Municipal Gallery in the Lenbachhaus and Kunstbau Munich, Art before 1945, Public Domain under (CC0 1.0)
Christian Art; Monthly magazine for all areas of Christian art and art history, vol.14, 1917/1918
Christian Art; Monthly magazine for all areas of Christian art and art history, vol.6, 1909/1910, Public Domain.
Bavarian State Painting Collections - Alte Pinakothek Munich, year 1714, attribution to Creative Commons (C BY-SA 4.0) https://creativecommons.org/licenses/by-sa/4.0/
Museum Catharijneconvent
Public Domain
BALaT, Licensed under CC BY 4.0 KIK-IRPA, Brussels (Belgium), cliché G002645], https://creativecommons.org/licenses/by/4.0/, https://balat.kikirpa.be/copyright/copyright_en-GB.php, Digitally Enhanced.
Museum Catharijneconvent
Public Domain
National Cultural Heritage Agency of Netherlands / 355.478, Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / 315.909, Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
National Cultural Heritage Agency of Netherlands / 315.909, Digitally Enhanced, http://creativecommons.org/licenses/by-sa/3.0/
BALaT, Licensed under CC BY 4.0 KIK-IRPA, Brussels (Belgium), cliché X063953], https://creativecommons.org/licenses/by/4.0/, https://balat.kikirpa.be/copyright/copyright_en-GB.php, Digitally Enhanced.