Trees with a little more here and there. Swiss. Painted by Adolf Dietrich (1877-1957). One of the most renowned of what are referred to as naïve artists.

"Marder im Winterwald / Marten in the Winter forest." 1937. Oil on cardboard.
“Marder im Winterwald / Marten in the Winter forest.” 1937. Oil on cardboard. © Estate of the artist. Fair use license. via
Dietrich, Waldren at Langenagen 1917
“Waldren at Langenagen.” 1917. © Estate of the artist. Fair use license. via http://art-now-and-then.blogspot.com/2013/06/adolf-dietrich.html
"Vorfrühling" (Early Spring). 1933.
“Vorfrühling” (Early Spring). 1933. © Estate of the artist. Image © 2019 MCH Group | Curiator . Fair use license. via https://curiator.com/art/adolf-dietrich/vorfruehling-early-spring

Glacier art. Swiss. Caspar Wolf, painter (1735-1783). All up in the Alps. Loved to paint frozen waterfalls, too.

"Unterer Grindelwaldgletscher nach dem Vorstoß von 1770." 1774.
“Unterer Grindelwaldgletscher nach dem Vorstoß von 1770.” 1774. In the public domain in the United States because it was published before January 1, 1924. via https://commons.wikimedia.org/wiki/File:Unterer_Grindelwaldgletscher.jpg
"View of the Bänisegg over the Lower Grindelwald Glacier." 18th c.
“View of the Bänisegg over the Lower Grindelwald Glacier.” 18th c. Photo credit: Jörg Müller. In the public domain due to age. via https://www.apollo-magazine.com/gallery-caspar-wolf-at-the-kunstmuseum-basel/#jp-carousel-171532
"Lower Grindelwald Glacier, with the Lütschine River and Mettenberg." ca. 1775. Oil on canvas.
“Lower Grindelwald Glacier, with the Lütschine River and Mettenberg.” ca. 1775. Oil on canvas. Image courtesy Museum Oskar Reinhart, Winterthur. Photo credit: SIK-ISEA (Philip Hitz). Fair use license. via https://alaintruong2014.wordpress.com/2014/12/29/kunstmuseum-basel-presents-exhibition-of-works-by-swiss-landscape-painter-caspar-wolf/
"La Caverne du Dragon pres de Stans." 18th c.
“La Caverne du Dragon pres de Stans.” 18th c. Gouache. Collection of the Aarau, Aargau Kunsthaus. Photo Credit: Jörg Müller, Aarau. Fair use license. via https://alaintruong2014.wordpress.com/2014/12/29/kunstmuseum-basel-presents-exhibition-of-works-by-swiss-landscape-painter-caspar-wolf/

Illuminations from 14th and 15th century manuscripts in the collections of the British Library. British Library Catalogue of Illuminated Manuscripts via mesa-medieval.org.

House of the Sun (detail).
House of the Sun (detail). 1444-1445. Made in Rouen, France. Attributed to the Talbot Master. Royal 15 E VI f. 18v. Image © The British Library. Fair use license. via http://www.bl.uk/catalogues/illuminatedmanuscripts/ILLUMIN.ASP?Size=mid&IllID=38834
Trees of the sun, moon and phoenix (detail).
Trees of the sun, moon and phoenix (detail). 1444-1445. Made in Rouen, France. Attributed to the Talbot Master. Royal 15 E VI f. 18v. Image © The British Library. via http://www.bl.uk/catalogues/illuminatedmanuscripts/ILLUMIN.ASP?Size=mid&IllID=38834
Initial-word panel. Shir (song) with a bear and a unicorn, at the beginning of Song of Songs (page detail).
Initial-word panel. Shir (song) with a bear and a unicorn, at the beginning of Song of Songs (page detail). 1300-1325. German. Additional 15282 f. 296v. Image © The British Library. Fair use license. via http://www.bl.uk/catalogues/illuminatedmanuscripts/ILLUMIN.ASP?Size=mid&IllID=52566
Historiated initial 'P'(uer) of the Nativity with a full border with naturalistic flowers including a rose, a columbine, and lilies, at the beginning of the mass of the Nativity.
Historiated initial ‘P'(uer) of the Nativity with a full border with naturalistic flowers including a rose, a columbine, and lilies, at the beginning of the mass of the Nativity. 1475-1525. Made in the Saint Gall region of Switzerland. British Library Harley 294. Image © The British Library. Fair use license. via http://www.bl.uk/catalogues/illuminatedmanuscripts/ILLUMIN.ASP?Size=mid&IllID=24700

Symbolist looking ladies. Swiss/German. Adolf Frey-Moock, painter (1881-1954).

"Euterpe." 1910.
“Euterpe.” 1910. Oil on canvas. Signed and dated on the center right. © Estate of the artist. Image © 2017-2018 Kunkel Fine Art. Fair use license. via https://www.kunkelfineart.de/gal/index.php/en/gallery/1/154/470/Adolf%20Frey-Moock
Portrait of a lady said to be the artist's wife.
Portrait of a lady said to be the artist’s wife. 20th c. Oil on board. Signed ‘A. Frey Moock’ on the bottom right. © Estate of the artist. Image © 2019 Freemans’s. Fair use license. via https://auctions.freemansauction.com/asp/fullcatalogue.asp?salelot=1547%20%20%20%20%20162%20&refno=%20%20%20%20162
"Salomé with the Head of St John the Baptist." 1910.
“Salomé with the Head of St John the Baptist.” 1910. © Estate of the artist. via https://strangetears.wordpress.com/2015/07/08/adolf-frey-moock-1881-1954/

Animals painted in oils and not the dog and cat variety. Giraffes, big cats and even a guanaco ( first cousin to a llama). Swiss. Jacques-Laurent Agasse, artist. Living from 1767 to 1849, he also painted landscapes.

2016_cks_13100_0032_000jacques-laurent_agasse_two_bengal_tigers_in_an_savannah_landscape_with
“Two Bengal tigers in a savannah landscape, with a man in a tree.” No date. Image © CHRISTIE’S 2019. Fair use license. via https://www.christies.com/lotfinder/Lot/jacques-laurent-agasse-geneva-1767-1849-london-two-bengal-6011521-details.aspx
"Giraffes with impala in a landscape." No date.
“Giraffes with impala in a landscape.” No date. Image © CHRISTIE’S 2019. Fair use license. via https://www.christies.com/lotfinder/Lot/jacques-laurent-agasse-geneva-1767-1849-london-giraffes-with-6009853-details.aspx
"Zebra." 1803.
“Zebra.” 1803. Collection of the Yale Center for British Art, New Haven. In the public domain in the United States because it was published before January 1, 1924. via https://commons.wikimedia.org/wiki/File:Jacques-Laurent_Agasse_-_Zebra_-_Google_Art_Project.jp
"Guanaco." ca. 1848.
“Guanaco.” ca. 1848. Collection of the Yale Center for British Art, New Haven. In the public domain in the United States because it was published before January 1, 1924. via https://commons.wikimedia.org/wiki/File:Jacques-Laurent_Agasse_-_Guanaco_-_Google_Art_Project.jpg
"Two Leopards Lying in the Exeter Exchange." ca. 1808.
“Two Leopards Lying in the Exeter Exchange.” ca. 1808. Private collection. In the public domain. via https://www.allposters.com/-sp/Two-Leopards-Lying-in-the-Exeter-Exchange-1808-Posters_i1364932_.htm?UPI=O6IRF0&PODConfigID=8880730&sOrigID=22120

Pictures of young people by Swiss painter Jean-Étienne Liotard. Living from 1702 to 1789, he is best known for his pastel portraits.

Princess Louisa Anne.  1754.
Princess Louisa Anne. 1754. Image © Royal Collection Trust. Fair use license. via https://www.bsecs.org.uk/criticks-reviews/jean-etienne-liotard/
"Avec une Poupee/Marianne Liotard Holding a Doll." 1765.
“Avec une Poupee/Marianne Liotard Holding a Doll.” 1765. Pastel on parchment. Collection of Schönbrunn Palace, Vienna. In the public domain in the United States because the artist has been dead over 70 years. via https://neiljeffares.wordpress.com/2016/01/06/mlle-liotard-playing-with-her-doll-some-puzzles/
Princess Caroline Mathilda. 1754.
Princess Caroline Mathilda. 1754. Pastel on vellum. Royal Collection Trust. In the public domain because the artist has been dead over 70 years. via https://commons.wikimedia.org/wiki/File:Caroline_Matilda_1754_by_Liotard.jpg
Prince Henry Benedict Clement Stuart (1725–1807), Cardinal York and younger brother of Prince Charles Edward Stuart.
Prince Henry Benedict Clement Stuart (1725–1807), Cardinal York and younger brother of Prince Charles Edward Stuart. 18th c. Image and photo credit © National Galleries of Scotland, Scottish National Portrait Gallery. Fair use license. via https://artuk.org/discover/artworks/prince-henry-benedict-clement-stuart-17251807-cardinal-york-and-younger-brother-of-prince-charles-edward-stuart-212866
"Children Blowing Soap Bubbles." 18th c.
“Children Blowing Soap Bubbles.” 18th c. Collection of Schönbrunn Palace, Vienna. In the public domain in the United States because the artist has been dead over 70 years. via https://elismondom.wordpress.com/2012/04/26/genf-a-szepmuveszeti-muzeum-es-liotard/