David Johnson wrote:

> Hi Tom.
>
>> This is indeed a good review of Genesis. I appreciate the fact that
>> the reviewer picked up on Beam’s efforts to depict the THFH
>> society as multi-racial. That was something that struck me very
>> early on in my reading of Piper. I don’t remember any other SF
>> writer of that period who made such a point of this, or who was as
>> consistent in their approach on the matter.
>
> Yes, this is one of the most remarkable things about Beam's writing,
> especially given that Beam himself made little bones about it.

The Empire in Isaac Asimov's Foundation series is mentioned in passing
as multi-racial.

The same goes for Poul Anderson's Technic Civilization-Terran Empire
series starting with Flandry.