National Museum of Denmark, Digitally Enhanced
Attribution to Creative Commons, https://creativecommons.org/licenses/by-sa/4.0/
The Holy Sacrifice of the Mass: The Perpetual Sacrifice of the Catholic Church by Josef Merk
Royal Museum of Fine Arts Antwerp
Public Domain
National Museum of Denmark, Digitally Enhanced
Attribution to Creative Commons, https://creativecommons.org/licenses/by-sa/4.0/
RISD, Attribution to Creative Commons http://creativecommons.org/publicdomain/mark/1.0/
BALaT Licensed under CC BY 4.0 KIK-IRPA, Brussels (Belgium), cliché X002748] https://creativecommons.org/licenses/by/4.0/ https://balat.kikirpa.be/copyright/copyright_en-GB.php Digitally Enhanced
Europeana, Attribution to creative Commons, https://creativecommons.org/licenses/by/3.0/ Digitally Enhanced
Artwork copyright © Diocesan. May not be resold or reproduced for sale. See Terms of Use for further details.
Library of Congress
Public Domain
University of Göttingen, Digitally Enhanced
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National Museum of Denmark, Digitally Enhanced
Attribution to Creative Commons, https://creativecommons.org/licenses/by-sa/4.0/
National Museum of Denmark, Digitally Enhanced
Attribution to Creative Commons, https://creativecommons.org/licenses/by-sa/4.0/
National Museum of Denmark, Digitally Enhanced
Attribution to Creative Commons, https://creativecommons.org/licenses/by-sa/4.0/
Bavarian State Painting Collections, Digitally Enhanced
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Artwork copyright © Diocesan. May not be resold or reproduced for sale. See Terms of Use for further details.
Brooklyn Museum, Purchased by public subscription, Digitally Enhanced, Creative Commons License https://creativecommons.org/licenses/by/3.0/
Public Domain