That makes sense, although I don't think it should be a new entry. Your entry is the third pressing of this release, and, as you say, this is the first time Dot confirmed that the other tracks are by "other artists". The first release should be the standard for the listing, and all other various releases should be added in notes, and pics added accordingly, IMO. I just think it's a job for the mods to sort out what goes where and what should be in the main listing.
Sorry! I only realised now that I completely forgot to explain that the LP packaging was altered in response to the complaints by the Surfaris, so that it then described the tracks other than "Wipe Out" and "Surfer Joe" as being by "other instrumental groups" (see it on Discogs).
And so this entry is correct for that version of the LP. It would be best to create a completely new one for the version you have in your collection, listing the Surfaris as the artist for all 12 tracks, and link it to the others.
That's not my point Boursin, it's listed on the label and jacket as by the Surfaris, so that's the way it should read in the credits, the info you have should be listed in the notes.
And, why are the Surfaris only listed as the artist on two tracks, when the label and jacket cover makes no such distinction?
Because they only perform those two tracks, and complained about the misleading packaging! They moved from Dot to Decca immediately after the "Wipe Out" single was a hit. The other ten tracks were recorded by Richard Delvy (who had got them on Dot), probably with members of his own group The Challengers.
What was the first incarnation of this album, the cover with just "Wipe Out", or the cover with "Wipe Out" and "Surfer Joe" mentioned in bold graphics? And, why are the Surfaris only listed as the artist on two tracks, when the label and jacket cover makes no such distinction?