[Tuor in Gondolin]

I recommend the "Annotated Hobbit".
Not just for the notes and commentaries
on Tolkien revisions but also for the
illustrations of scenes and peoples in TH
by various countries' illustrators.

I'm not sure, I'll check, but I think it's Shippey,
who observes and analyses how Bilbo
and his world begins as a bourgouis
person and world, becomes fairytale
adventure and then returns to a middle class
world, especially by the language and allusions Bilbo uses.