Was Howard Zinn a legitimate historian? What about Eric Hobsbawm?
What did you say in your speech entitled “Twilight in America: The Birth of Ronald Reagan and Contemporary Conservatism”? Oddly enough, I can find the title but the content is not available.
I haven't read Hobshawn, but I know he's a leftie, and Zinn was a member of the Communist Party, so caveat lector. They might be considered legitimate historians, more or less in the tradition of Gabriel Kolko, William Appleman Williams or Gar Alperovitz.