Lucy Kemp-Welch is considered one of the greatest equine artists of all time. This web page features many of her amazing horse paintings.

https://100greatestwomenartists.blogspot.com/2020/08/18-lucy-kemp-welch-1869-1958.html

There's a virtual tour of some of her original paintings at the Bushey Museum and Art Gallery.
https://busheymuseum.org/cc_panorama/DSC_0002%20Panorama.htm