I'm curious as to why you replied to me to write about Hasselrig. Was it just coincidence or do you know he and I are from the same city?
I'll give this a shot. Current Head Coach at Cal Poly San Luis Obispo may be the only runner to have earned All-American honors in the NCAA DI, DII and DIII levels. According to this article and Conover himself, he earned AA honors for all 3 divisions. Conover attended Humboldt when they were a "DIII affiliate" and was an AA. He then won a DII title in the 10k and XC and I believe that it was in XC that he earned his DI AA honor.
David Moeller of the University of Rochester also earned all-America honors in Division I, II, and III in cross country.