Paintings of the American state of Texas from a good bit back. Theodore Gentilz, artist. Living from 1819 to 1906, he was born in France but immigrated to Texas as a young man and painted there. Also taught art in San Antonio.

"Lavanderas" (Wash Day on San Pedro Creek) No date.
“Lavanderas” (Wash Day on San Pedro Creek) No date. Collection of the San Antonio Museum of Art. Image © San Pedro Creek Culture Park. 2019. Fair use license. via https://spcculturepark.com/visit/interactive-map/san-pedro-creek-and-the-saga-of-a-city/
The Alamo (Mission San Antonio de Valero, showing a view of the unfinished church following the siege of the Alamo. The church was used as part of the defensive fortifications during the battle. 1840's.
The Alamo (Mission San Antonio de Valero, showing a view of the unfinished church following the siege of the Alamo. The church was used as part of the defensive fortifications during the battle. 1840’s. Image © 2019 Hearst Newspapers, LLC Fair use license. via https://www.chron.com/life/health/article/Gentilz-exhibit-to-debut-at-Texas-Independence-9329354.php
"Mission at Monclova, Mexico." 19th c.
“Mission at Monclova, Mexico.” 19th c. Image © Copyright 2019, The Rivard Report. Fair use license. via https://therivardreport.com/sheerin-familys-gift-to-enhances-samas-texas-art-collection/

Bluebonnets as bright a blue as the sky over Texas. American. Oil paintings. Impressionist. Julian Onderdonk, artist (1882-1922).

"Bluebonnets in Texas." No date.
“Bluebonnets in Texas.” No date. In the public domain in the United States because the artist has been dead over 70 years. via https://julianonderdonk.wordpress.com/about/
“Bluebonnet Scene with Girl." 1920.
“Bluebonnet Scene with Girl.” 1920. Oil on canvas. Image © Ogden Museum of Southern Art, New Orleans. Fair use license. via https://ogdenmuseum.org/summermembershipdrive/robert-julian-onderdonk-bluebonnet-scene-with-girl-1920-oil-on-canvas-roger-h-ogden-collection/
"Bluebonnet Landscape with Cacti, Road and Mountain Laurel." No date.
“Bluebonnet Landscape with Cacti, Road and Mountain Laurel.” No date. In the public domain. via https://www.wikiart.org/en/robert-julian-onderdonk/bluebonnet-landscape-with-catci-road-and-mountain-laurel
"Late Afternoon Bluebonnets-San Antonio, Texas-Fort Sam Houston in Distance." 1914.
“Late Afternoon Bluebonnets-San Antonio, Texas-Fort Sam Houston in Distance.” 1914. Image © 2000-2019 askART. Fair use license. via http://www.askart.com/Artist_Art_For_Sale_Inquiry.aspx?adno=82773&artist=4994