One hub I’ve never seen in the wild is the Viking Hub, a 1968 product developed by Don Chapman at the Viking Automotive Equipment in Gardena, California. Before he moved to California, Chapman was active in Colorado’s offroad community and was involved in an offroad accessories in Colorado as well, most likely Dualmatic or Husky (anyone know the relationship between the two?), which were both based in Longmont.

Here’s an ad for it. Looks like a nice hub:

Four Wheeler Magazine did an article on the product and included this exploded view: