I tend not to think of fiction written in the now about events only 40 or so years previous as historical, but ...
Finally realized two other novels I enjoy are at least technically historical fiction: Devil in a Blue Dress by Walter Mosley. Less enjoyable but maybe even more formidable, James Ellroy's The Black Dahlia. Given Ellroy's works are mainly set in the 1960s or before, he's an historical novelist.