Can you find me a history book written in the 20's or 30's without all the leftist bias?
Well, you could just eschew books that old and read newer ones. :')
“A history book written in the 20’s and 30’s without all the leftist bias?”
I read it some time ago, so I don’t remember about any leftist bias, but I found H.G. Wells, “Outline of History” quite interesting. I think I had an edition that had been edited and reissued around that time.