“Die großen Wasserfälle in Tivoli.” 1783. Oil on canvas. Collections of the Hermitage Museum, Saint Petersburg. In the public domain in the United States because the artist has been dead over 100 years. via https://commons.wikimedia.org/wiki/File:Jacob_Philipp_Hackert_002.jpg
“Villa des Maecenas mit den Wasserfällen in Tivoli.” 1783. Oil on canvas. Collections of the Hermitage Museum, Saint Petersburg. In the public domain in the United States because the artist has been dead over 100 years. via https://commons.wikimedia.org/wiki/File:Jacob_Philipp_Hackert_008.jpg