Heidelberg University Library via Europeana, Digitally Enhanced. https://creativecommons.org/licenses/by/4.0/
The National Museum in Krakow, date 1841, public domain.
Albertina Collections Online, inventory number 1886, public domain.
National Gallery of Ireland, date c. 1650, attributions to (CC-BY 4.0) https://creativecommons.org/licenses/by/4.0/ Digitally Enhanced
RKD Images, Nederlands Instituut voor Kunstgeschiedenis. Date ca.1620, Public domain.
Sörmland Museum, Origin Circa 1900, religious print, public domain.
RKD Images, Nederlands Instituut voor Kunstgeschiedenis. Date 1829 after, public domain.
RKD. Netherlands Institute for Art History, dated 1649. Public domain.
Wellcome Collection, Engraving by J. Coelemans, 1706, after G.F. Barbieri, il Guercino, 16-- Public domain.
Cultural Heritage Agency of the Netherlands, Document number 541,039, attribution to Creative commons http://creativecommons.org/licenses/by-sa/3.0/ Digitally enhance
Library of Congress, The return of the prodigal. dating 1905. Public domain.
Museo Virasto, dating 18th century, attribution to (CC-BY 4.0) https://creativecommons.org/licenses/by/4.0/ Digitally Enhanced.
Finnish National Gallery, Hannu Pakarinen, dating 1866. Public domain.
Vänersborg Museum. Digital Musuem, attribution to (CC-BY) https://creativecommons.org/licenses/by/4.0/, Digitally Enhanced.
Birmingham Museums. Creative Commons 0 - Public Domain. Optional attribution: Photo by Birmingham Museums Trust, licensed under CC0, public domain.
Archive.org, Die Christliche Kunst; Monthly magazine for all areas of Christian art and art science. vol.8, public domain.