There are some record labels that need linking.

First example I can think of (as I've just entered a Staples Singers L.P. on the label) is "20th Century", which has a number of subtly differing varieties ... "20th Century", "20th Century Fox", "20th Century Fox Records", "20th Century/Westbound" and (no doubt) "20th Fox" back in the 1950s are the same people.

And ... just to complicate matters ... maybe the U.S. "20th Century/Westbound" label should be linked to "Westbound" as well .. without Westbound becoming linked to all the other "20th Century" labels. Or maybe "20th Century/Westbound" should just revert to "20th Century" or possibly "Westbound"? It seems that the 45 off this L.P. came out as a "Westbound" 7" distributed by 20th Century Fox ... http://www.45cat.com/record/wt5009.

One of the 45worlds entries currently on the U.S. "20th Century/Westbound" label is by The Fantastic Four .. http://www.45worlds.com/vinyl/album/w201 .. I have a later release of theirs that was released on the U.K. "Atlantic" label .. http://www.45worlds.com/vinyl/album/k50415 and although it has a "Westbound" logo on the label it never occurred to me to create a new "Atlantic/Westbound" or "Westbound/Atlantic" label for this.

Are there any over-riding guidelines for this sort of thing?

You forgot Eastbound.

Italian label records "United Artists" and "United Artists Records" need linking.

Is there a chance to link labels after a change of name? In the case of Reggae label D.E.B. Music and DEB Music believe they lost the dots along the way to getting a more pro look. I rather would like it if both names could be retained in the end. Any chance?