"The Adventures of Tom Bombadil" by J. R. R. Tolkien

I did not realize this is a collection of poetry!  I thought it was going to be short stories like Smith of Wootton Major and Farmer Giles of Ham, but about Tom Bombadil instead.  But it's not, it's poetry.  

The edition I read, which is the one pictured here, contains the poems that Tolkien published under this title in the '60s, plus a whole lot of commentary on the poems, earlier variations of them, explanations of their history, discussions of how they fit into his Middle-earth world, and so ...