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 [[email protected]] on behalf of Eric Lease 
Morgan [[email protected]]
Sent: Friday, August 03, 2012 11:07 AM
To: [email protected]
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

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Karen Coyle
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