When I was growing up in the Evangelical church, Scofield’s annotations were considered practically canon, and the idea that Africans were sons of Ham and inferior to white people was, if you’ll pardon the expression, gospel.
Christians in the South who pushed back against that notion, like my father did when he pastored a church in Alabama, were considered to be not just heretics, but something like race traitors.
I did not know, however, and I’m sure my father didn’t either, that his treasured Scofield reference Bible had been written by the kind of man you’re describing.