Found it; thanks! That's so interesting that the spread of his philosophy relied on art, which is really ironic, since Epicurus's thoughts on aesthetics aren't a dominant part of his philosophy. Or at least they weren't preserved.
I'll reciprocate with a reference in turn y'all might not be familiar with. Unfortunately, it's only available through Internet Archive if you have a print disability. Otherwise, you probably have to use an interlibrary loan.
https://archive.org/details/histor…age/n7/mode/2up.
Pages 174-178