A couple of months ago I was doing some research into various sources of book data, and one of the things I was interested in was seeing if it was possible to hook into local library data. For example, if I was building a site that contained lots of book info, it’s easy to point to a place to buy that book online, and there are increasing ways to find things if they’re in your local bookshop (e.g. localbookshops.co.uk and LT Local). But what about seeing if it’s in your local library?

If I want to check my local library, I can use their website, but it’s not a great service, and I have to find my local library on a host of different local government sites, which use different protocols. Surely there’s a central database of this stuff? So I called up the library, and was passed around a bit, and was finally told about OCLC, the organisation that holds all catalogue records for UK libraries.

I’d come across the OCLC before in the form of WorldCat – a huge database of library holdings that, yes, does allow you to search for titles in your local library. However, its terms are quite restrictive, there’s no open API, and I didn’t use it much, preferring more free and more open services.
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