I'm not the original poster, but I've run into this before in terms of 
linking library holdings to digital versions. There are a few reasons I 
can think of for doing this linking:

1) Your library is a selection of works that you think will best serve 
your readers. The library catalog is not the only place they should 
look, but it is a useful first place to look.
2) Other functions, like your courseware, link to your catalog; 
discovering additional copies in this way is useful (of course, this 
assumes they aren't running a service like Umlaut, right?)
3) if you don't have a good record of what was digitized from your 
library, HathiTrust might be the best source of that

One of the big problems that I see with mass digitization and the access 
to those items is the loss of the role of the library in 
selection/collection building. I suppose if you are in a huge library 
like Harvard the collection is so large that it almost approaches 
"whatever." For smaller libraries, and with certain user populations, 
the mass of digitized texts is overwhelming. A library like Harvard 
assumes highly sophisticated users; when you combine Harvard and 
Michigan and California together you get a library that few of us can 
function in. I think the challenge for us now is to make that huge 
collection usable by folks other than a few experts.

kc

On 8/3/12 11:26 AM, Jonathan Rochkind wrote:
> Not an answer to your question, but if you want to share I'm curious what your use case is where you want to limit to items your library owns.
>
> If HathiTrust has em in fulltext -- why would it matter to your patrons if your library has a print copy or not? And if HT does not have them in fulltext.... still, why would it matter to your patrons if your library has a print copy or not?
> ________________________________________
> From: Code for Libraries [[log in to unmask]] on behalf of Eric Lease Morgan [[log in to unmask]]
> Sent: Friday, August 03, 2012 11:07 AM
> To: [log in to unmask]
> Subject: [CODE4LIB] haititrust
>
> If I needed/wanted to know what materials held by my library were also in the HaitTrust, then programmatically how could I figure this out? In other words, do you know of a way to query the HaitTrust and limit the results to items my library owns? --Eric Lease Morgan

-- 
Karen Coyle
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