The anniversary of Texas emancipation brings to mind Ralph Ellison's novel ,    So now we have Juneteenth , the novel that Ellison's executor,  John Callahan,    has ably quarried from that mountain. The book is more than Ellison  fans could    expect, yet less than Ellison probably hoped--an ambivalent  masterpiece. It    celebrates the promise of interracial love even as it cannot square  its black    and white points-of-view. It flares with stylistic  pyrotechnics--passages that    match Invisible Man for energy--even as its plot feels  unfinished and    its monologues too windy. Perhaps most strikingly, Juneteenth  aims to    speak to our current racial dilemmas even as it harkens to an age  before "the    inner city," "black power," and the "underclass." It    is easy to see why Ellison could not wrap up his epic: the novel  revolves in    an intelligence too complex and too quick, ironically, to come to  completion.    As his Invisible Man ...