Hi Tom,

By replacing the title in the URL with ".json", which gives [0], I got
the JSON view of the history. This is the "History API" [1]. It looks
like there is a record for each revision, that stores modification
date and comment, amongst other things. The first revision has
"machine_comment": "bpl_marc/bpl114.mrc:36416736:831". I assume this
is the (only) place where source record links are stored (i.e. in
metarecords linked to normal records).

I haven't looked at a complete dump with all revisions, but if you say
there is no history information included, I trust that that
information is not in the dump. I'm unaware of other dumps that could
include it.

Perhaps the information can more easily be extracted from the database
underneath Infogami?

Ben

[0] http://openlibrary.org/books/OL13446224M.json?m=history
[1] http://openlibrary.org/dev/docs/restful_api#history

On 6 March 2013 19:45, Tom Morris <[email protected]> wrote:
> If I look at the history for an edition, I can see the source MARC record
> and the contributor of that record associated with rev 1 of the history.
>
> http://openlibrary.org/books/OL13446224M/The_history_of_the_Yorubas?m=history
>
> For the above record, the links are to:
>
> http://openlibrary.org/show-records/bpl_marc/bpl114.mrc:36416736:831
> http://archive.org/details/bpl_marc
>
> Where is this information stored?  Is it available in the dump? (not as far
> as I can see)
>
> Also, while investigating this, I thought perhaps the recentchanges API
> might have the info (can't really tell), but it doesn't seem that the data
> that backs that API is available in dump form.  Is that correct?  Is it
> intentional?
>
> I'd like to use this information to figure out which are the largest sources
> of data to help prioritize vetting efforts.
>
> Tom
>
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