1., 2., 4.–6., 8.–53. [Städel Museum, Frankfurt am Main, Public Domain]
3. Reproduction after: Köln im Mittelalter. Geheimnisse der Maler (exhibition catalogue Wallraf-Richartz-Museum & Fondation Corboud, Köln), ed. by Katja von Baum and Iris Schaefer, Berlin/München 2013, S. 50, Abb. 40.
7. Philips Galle, after Jan van der Straet, The Invention of Oil Painting, c. 1589/93, engraving, 195 x 270 mm, Amsterdam, Rijksmuseum, Inv. Nr. RP-P-1904-1038 [Rijksmuseum, Amsterdam]
1.–23. [Städel Museum, Frankfurt am Main, Public Domain]
1. Hubert and Jan van Eyck, Ghent Altarpiece, 1432, oil on oak, 375 x 520 cm, Gent. Saint Bavo's Cathedral [Sint-Baafskathedraal Gent | © Dominique Provost, Hugo Maertens]
2. Philips Galle, after Jan van der Straet, The Invention of Oil Painting, c. 1589/93, engraving, 195 x 270 mm, Amsterdam, Rijksmuseum, Inv. Nr. RP-P-1904-1038 [Rijksmuseum, Amsterdam]
3. Claes Jansz. Visscher, Tabula ducatus Brabantiae continens marchionatum Sacri Imperii et dominium Mechliniense, 1652, engraving (coloured), 470 x 560 mm, Basel, Universitätsbibliothek, Inv. Nr. Mappe 236:37 [UBH Kartensammlung, Public Domain]
4. „Master of Flémalle“ (Workshop of Robert Campin), The Bad Thief to the Left of Christ (fragment), c. 1430, mixed technique on oak, 134,2 x 92,5 cm, Frankfurt am Main, Städel Museum, Inv. Nr. 886 [Städel Museum, Frankfurt am Main, Public Domain]
5.–7., 9., 23., 26., 30. [Städel Museum, Frankfurt am Main, Public Domain]
8. Joos van Cleve, Tripytych with the Lamentation, 1524, mixed technique on oak, 113,6 x 161,1 cm, Frankfurt am Main, Städel Museum, Inv. Nr. 803 [Städel Museum, Frankfurt am Main, Public Domain]
10.–12. Reproduktion after: Kemperdick, Stephan: Der Meister von Flémalle. Die Werkstatt Robert Campins und Rogier van der Weyden, Turnhout 1997, p. 237, fig. 11.
13. Jacques de Baerze and Melchior Broederlam, Crucifixion Triptych, c. 1391/99, oak and limewood, gilded, 167 x 252 x 22 cm, Dijon, Musée des Beaux-Arts, Inv. Nr. CA 1420 A [Wikimedia Commons | © Benjamin Smith]
14. Frans Hogenberg, The Iconoclastic Fury of 1566, c. 1566/70, etching, 209 x 281 mm, Amsterdam, Rijksmuseum, Inv. Nr. RP-P-OB-77.720 [Rijksmuseum, Amsterdam]
15. Ile-de-France, Nursing Madonna, c. 1350/1400, ivory, 9,5 x 5,5 x 3,0 cm, Utrecht, Museum Catharijneconvent, Inv. Nr. StCC b30 [Museum Catharijneconvent, Utrecht | © Ruben de Heer]
16. Lippo Memmi, circle, The Virgin Nursing the Christ Child, c. 1340, mixed technique on poplar, 32,2 x 23,4 cm, Berlin, Staatliche Museen zu Berlin, Gemäldegalerie, Inv. Nr. 1072 [Staatliche Museen zu Berlin, Gemäldegalerie | © Jörg P. Anders]
17. „Master of Flémalle“ (Workshop of Robert Campin), The Betrothal of the Virgin Mary, c. 1420/30, oil on oak, 77 x 88 cm, Madrid, Museo Nacional del Prado, Inv. Nr. P001887 [Wikimedia Commons]
18. „Master of Flémalle“ (Workshop of Robert Campin), Christ and the Virgin, c. 1527/32, oil on panel, 28,6 x 45,6 cm, Philadelphia, Philadelphia Museum of Art, Inv. Nr. 332 [Philadelphia Museum of Art, John G. Johnson Collection, Philadelphia, Public Domain]
19. East Roman, „Vera Icon“, from S. Silvestro in Capite, 6th century (?), 21 x 27 cm, Rom, Musei Vaticani, Cappella Matilde (o Redemptoris Mater), Inv. Nr. MVF.II.10.6 [Wikimedia Commons | © Wolfgang M.]
20. Master of Saint Veronica, St Veronica with the Sudarium, c. 1425, oil on fir panel, 78,1 x 48,2 cm, München, Alte Pinakothek, Inv. Nr. 11866 [Bayerische Staatsgemäldesammlungen – Alte Pinakothek München, Public Domain]
21. Hans Multscher, Holy Trinity, c. 1430, alabaster, polychromed, hight 28,5 cm, Frankfurt am Main, Liebieghaus Skulpturensammlung, Inv. Nr. St.P401 [Liebieghaus Skulpturensammlung, Frankfurt am Main, Sammlung Städelsches Kunstinstitut]
22. Upper Swabia, Winged altarpiece, c. 1490, limewood, polychromed, 132 x 122 x 30,5 cm, Rottweil, Dominikanermuseum, Inv. Nr. SD 041 [Dominikanermuseum Rottweil | © Ralf Graner]
24. Common dandelion (Taraxacum sect. Ruderalia) [Wikimedia Commons | © Christian Reinboth]
25. Common agrimony (Agrimonia eupatoria) [Wikimedia Commons | © Pethan]
27. English, Ring, late 13th or early 14th century, gold und sapphire, 2.8 x 2.1 x 0.5 cm, New York, The Metropolitan Museum of Art, Inv. Nr. 2015.697 [The Metropolitan Museum of Art, New York, Public Domain]
28. Italian, lampas, early 15th century, 25,5 x 36 cm, Krefeld, Deutsches Textilmuseum, Inv. Nr. 02079 [© Deutsches Textilmuseum Krefeld]
29. Italian, lampas, 14th century, hight 34 cm, Wien, Museum für angewandte Kunst, Inv. Nr. T 7257 [Museum für angewandte Kunst, Wien | © Aslan Kudrnofsky]
31. Diego de la Cruz, The Mass of Saint Gregory, c. 1470/80, oil on panel, 168 x 168 cm, Barcelona, Museu Nacional d'Art de Catalunya, Inv. Nr. 200701-000 [Museu Nacional d'Art de Catalunya, Barcelona, Public Domain]