Louis Wain’s cat-centric art was extremely popular in the late 19th and early 20th centuries, and some of his later work became an inspiration for the psychedelic movement of the 1960s.
Research:

John Evelyn's 'Fumifugium'
39:35

SYMHC Classics: Hennig Brand
29:33

Behind the Scenes Minis: Odd Baby Train
28:32