When I was in Elementary school, back in the 50s, the geography
book listed the three main race groups as Caucasian, Negroid, and Mongoloid.
Junk science disredited in the 1930s and 1940s. Reminds me of the book I had in elementary school that talked about how we would "be on the moon by the end of the century", and that we had 48 states. This was in the 1980s.
You know that struck me too. Since when did “African” become a race? That is a nationality, not race. For that matter, what would a Hawaiian be? Asian?