Lascaux cave paintings
https://www.history.com/this-day-in-history/lascaux-cave-paintings-discovered
Labors of the Months from the Très Riches Heures
http://publicdomainreview.org/collections/labors-of-the-months-from-the-tres-riches-heures/
https://www.history.com/this-day-in-history/lascaux-cave-paintings-discovered
http://publicdomainreview.org/collections/labors-of-the-months-from-the-tres-riches-heures/