Before doing The Hobbit, here’s an interesting and short example of superduping an omnibus. (Omnibus editions are example of “aggregates,” an unsettled subject in the FRBR world.) It doesn’t spiral out of control, but it does, shall we say, expand beyond its borders.
I have in hand Captain Hornblower RN, which contains three of the Horatio Hornblower novels by C.S. Forester: Hornblower and the Atropos, The Happy Return, and A Ship of the Line. Penguin did all the Hornblower novels in three omnibus editions: The Young Hornblower, this one, and Admiral Hornblower. They arranged them into internal chronological order, not publishing order. My item is an exemplar of the the seventh impression of the Penguin manifestation of 1987. The ISBN is 0140081771. The copyright page says it was first published this way by Michael Joseph in 1965.
If we query thingISBN for 0140081771, we get back a cluster of four ISBNs: 0140081771, 0316288934, 2258039622, and 3548256554.
If we query xISBN for 0140081771, we get back two ISBNs: 0140081771 and 5859590202.
Let’s superdupe and group together all fragmented clusters at both services by comparing ISBNs back and forth.
The first ISBN is the one we started with, and it’s known to both services so it’s added to the superdupe array.
Super Source ISBN ts xs Title
0 T 0140081771 Captain Hornblower RN
The next one isn’t known at xISBN.
Super Source ISBN ts xs Title
1 T 0316288934 3 1 + 0 Captain Horatio Hornblower
2 T 2258039622 2 1 + 2 Capitaine Hornblower (fre)
Line 2 opens up a cluster at xISBN: 2258039622 and 2258039614. They are Capitaine Hornblower, a French translation.
Super Source ISBN ts xs Title
3 T 3548256554 1 2 + 4 Hornblower, Der Kapitän (deu)
That German edition opens up a cluster of four at xISBN: 0140008357, 0141027053, 3548024815, and 3548256554. Now that we’ve run through all of the numbers from thingISBN, we start running through the ones from xISBN and looking them up at thingISBN.
Super Source ISBN ts xs Title
4 X 0140008357 0 + 9 5 The Happy Return
Interesting. This ISBN, which we got from xISBN in the Hornblower, Der Kapitän cluster, opened up a cluster of nine books at thingISBN. They are: 0140008357, 0141027053, 0316289329, 0523003854, 0523407351, 0523413904, 0718104692, 0736606548, 1859989969. The Happy Return is one of the novels in the omnibus, and it’s not unexpected that it would turn up. Someone wanting to the read The Happy Return could find it in Captain Hornblower RN. Someone wanting the omnibus edition would probably be as happy with the three individual novels, and perhaps all they really need is one of the three.
Things continue apace for a little while:
Super Source ISBN ts xs Title
5 X 0141027053 The Happy Return
6 X 2258039614 7 + 0 3 Capitaine Hornblower (fre)
7 X 3548024815 7 + 0 2 Der Kapitän (deu)
8 X 5859590202 7 + 0 1 Kapitan Khornblouer (rus)
But now we get Beat to Quarters, which thingISBN clustered with The Happy Return. Why? It’s not part of this omnibus. The LibraryThing work information page shows that people have grouped the two together as being the same work. This may be because of an older omnibus edition that does group the two novels.
Now we run through a bunch more manifestations of Beat to Quarters and a couple of The Happy Return, and something in Swedish.
Super Source ISBN ts xs Title
9 T 0316289329 7 0 + 5 Beat to Quarters
10 T 0523003854 Beat to Quarters
11 T 0523407351 5 3 + 0 Beat to Quarters
12 T 0523413904 4 3 + 0 Beat to Quarters
13 T 0718104692 3 3 + 0 The Happy Return
14 T 0736606548 2 3 + 0 Beat to Quarters
15 T 1859989969 1 3 + 1 Hornblower and the Happy Return (audio)
16 X 0736688986 0 + 0 3 Beat to Quarters (audio)
17 X 0736691286 0 + 0 2 Beat to Quarters (audio)
18 X 9137058126 0 + 0 1 Order Och Kontraorder (swe)
I was expecting that Hornblower and the Atropos and A Ship of the Line (the other two novels in the omnibus) would show up as individual works, but they didn’t. I didn’t do any deep investigation into this, to check how xISBN handles aggregates or what LibraryThing users do with such collections. One possible cause may be that omnibus editions are far more popular than individual ones, at least during the ISBN era.
Instead, because of what may be some overzealous grouping by a LibraryThing user Beat to Quarters came into the mix. It isn’t part of the omnibus in hand, and if we wanted to keep to just Captain Hornblower RN we’d have been better off not superduping. On the other hand, it certainly is related and of interest to the reader, so no harm is done. Perhaps it would help the user. Ideally, a catalogue would tie together all the Hornblower novels and the various omnibus editions so they are all easy to navigate.
Combining and deduping: 5
Superduping: 19 ISBNs
thingISBN: 4 at start; 8 calls; 9 ISBNs added; 6 unknown
xISBN: 2 at start; 10 calls; 12 ISBNs added; 5 unknown
Superduping other omnibuses might show the constituent works being pulled out, but I’ll stop with this.
By the way, Forester’s Hornblower stories are all excellent and I recommend them.
I’m going to go on to some larger examples of superduping, but first I’m going to take a sidestep and bring in a new tool that will make it easier to see what’s going on.