I am reading one of those books that I've heard about on and off all my life, but never read: Van Wyck Brook's 1937 The Flowering of New England: 1815-1865.
While the book is mainly about the blossoming of American scholarship and literature, I would have to rank the book as a piece of literature itself. Wonderful stuff. It's not literary history - it's history, told in an engaging and often humorous way.
The parts about the remarkable Daniel Webster are hilarious, as are the bits about one of America's first world-renowned eccentric geniuses, Nathaniel Bowditch.
Brooks was one of those old-fashioned scholar-writers who knew everything about everything.