I think the Black Fleet was mentioned in (I think) Children of Kings.
Anyone know if this is right? I think this would be the only link to the novel continuity in The Children of Kings.
Not the only link - Children of Kings
builds on a tidbit from Spock's World
, that the Orions are degenerate remnants of an ancient super-race.
Also, some elements of Vulcan's Glory
are recycled (like Number One's backstory) but with a few minor details altered.