
Image: Balfour Smith, Canuckguy, Badseed, Martsniez [CC BY 3.0], via Wikimedia Commons
Thanks to the 1998 Copyright Extension Act, also known as the Sonny Bono Act, no artwork published made in 1923 or afterward that were still protected by copyright in 1998 will enter the public domain until 2019. But doesn't the United States abide by the “author's life plus 70 years” as the terms of copyright? Technically yes, but when the Extension Act was passed, it was retroactively applied to give works published between 1923 and 1977 a copyright term of 95 years. Confused yet? So are we. Basically, the work of artists who passed in 1947 went into the public domain in most of the world as of January 1, 2018. Those same works won't enter into the public domain in the United States until 2042.
While you ponder that thought, let's take a look at some of the great visual artists whose work is being made freely available for scholarship, research, and creativity in other countries around the world. You can see a comprehensive list of artists, musicians, and authors—including Winston Churchill and Che Guevara—on Wikipedia.
Happy Public Domain Day! Here's a look at some of the top visual artists whose work entered the public domain (depending on where you live).
René Magritte (1898–1967)

The Belgian painter is one of the most well-known members of the Surrealist group, and is known for his thought-provoking work that challenges our perceptions of reality.
Pierre Bonnard (1867-1947)

Self-portrait. c. 1889 (Image via Wikipedia)
Bonnard was a French painter and printmaker who was the founder of the Post-Impressionist avant-garde group Les Nabis.
Edward Hopper (1882 – 1967)
This Famed American Realist painter is most well-known for his oil paintings of rural and urban life such as Nighthawks.
Kathleen Scott (1878 – 1947)

Robert Falcon Scott. 1917. Christchurch, New Zealand. (Photo: Markus Koljonen (Own work) [GFDL, CC-BY-SA-3.0 or CC BY-SA 2.5-2.0-1.0], via Wikimedia Commons)
Albert Marquet (1875 – 1947)

Posters at Trouville. 1906. (Image via Wikiart)
French painter and close friend of Matisse, Marquet was associated with the Post-Impressionist Fauvist movement but later began painting landscapes in a naturalistic style.
Georg Kolbe (1877 – 1947)

Der Morgen (Morning). 1925. Berlin, Germany. (Photo: Emmridet at the German language Wikipedia [GFDL or CC-BY-SA-3.0], via Wikimedia Commons)
Nicholas Roerich (1874 – 1947)

Monhegan Maine. 1922. (Image via Wikipedia)
Trained as both a lawyer and painter, the Russian artist was nominated several times on the Nobel Peace Prize long list. He was also an activist for the preservation of art and archeology during times of war.
Prudence Heward (1896 – 1947)
This Canadian figurative painter is known for her use of color and the intensity of her subjects. She was a Canadian Group of Painters and the Contemporary Arts Society.
Han van Meegeren (1889 — 1947)

“The Last Supper I” by Han van Meegeren at the 11th Art and Antiques Fair in Rotterdam August 31, 1984. (Photo: Photographer Croes, Rob C., Fotocollectie Anefo, Nationaal Archief NL. ([1] Nationaal Archief NL, [2]) [CC BY-SA 3.0], via Wikimedia Commons)
Johannes Itten (1888 — 1967)

Itten teaching in 1954. (Photo: Serge Lachinov (копия, обработка для wiiki) [GFDL or CC-BY-SA-3.0], via Wikimedia Commons)
h/t: [Hyperallergic, The Public Domain Review]
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