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On Nov 28, 2021, at 6:01 AM, Peter Velikonja <[log in to unmask]> wrote: > As Kyle mentioned, a screenscraping method is inefficient and will > get you incomplete results. As a vendor to public libraries, I routinely > request (and receive) MARC dumps. Some libraries are better than > others at pulling these from their ILS, but records based on MARC come > from the Library of Congress and are therefore public information -- to > which you are entitled if you reside in the US. A number of libraries > make dumps available through various Open Data initiatives -- spotty but > can be useful. Screenscraping can be good for spot-checking, but if > you want a complete catalog, working with an ILS administrator is, in > my view, a better path. I concur. See if you can get an MARC dump. If you are seeking the bibliographic information, then this probably the most complete, accurate, and efficient. --Eric Morgan