HB Louis!

 Louis William Wain, 8/5/1860-7/4/1939, was an English artist and illustrator, best known for his cat images.

Learn more here: 

Louis Wain: The artist who changed how we think about cats

Cat Wearing a Bow by Louis Wain, no date

A Fine Swing by Louis Wain, postcard published 1904

A Cat in Gothic Style by Louis Wain, created between 1925 and 1939

In 2021, The Electrical Life of Louis Wain film was released, starring Benedict Cumberbatch and Claire Foy.

I haven't yet seen the film, as it's not available on DVD at the library, but I'll get to watch it someday!

I mean, cats and Cumberatch!

*swoon*