Pop Aesthetics of 1750

OK, here I am at the UConn library, raring to do some last-minute research

dubdobdee says here:

It travels because, however newly named, it's one of the golden oldies in aesthetics — the phenomenon of the Sublime, that combo frisson of awe, fright, satisfaction and pleasure, which stopped being avant garde about a quarter of a millennium ago, round about the time Edmund Burke said, "A clear idea is another name for a little idea", while all around edgy folks swooned before the immensity or violence or dreadfulness of chasms, volcanoes, stormclouds and shadows; and Hugh Walpole — on a forests-and-mountains walking tour in the Alps — got to see his beloved pet poodle being gobbled up by a wolf.

All right, clearly if I am to understand the decade in pop, I will need someone to tell me in what essay, book, or broadside I can find various people - Edmund Burke, Hugh Walpole, Kara Dioguardi, not to mention whoever wrote the idea when it was still avant garde - putting forth the theory of the Romantic Sublime. The Encyclopedia of Philosophy is rather taciturn on the subject.