LC's Classification Web provides a mapping from LC classifications to LC subject headings. There is a manual web interface, used mainly by catalogers, which requires a subscription: http://classificationweb.net/ I don't know if it has any kind of API. Keith On Tue, Oct 18, 2011 at 2:11 PM, Enrico Silterra <[log in to unmask]> wrote: > is there any way to go from a LC call number, > like DF853 to http://id.loc.gov/authorities/subjects/sh85057107 > via some sort of api? opensearch? > thanks, > rick > > > > -- > Enrico Silterra Software Engineer > 501 Olin Library Cornell University Ithaca NY 14853 > Voice: 607-255-6851 Fax: 607-255-6110 E-mail: [log in to unmask] > http://www.library.cornell.edu/dlit > "Out of the crooked timber of humanity no straight thing was ever made" > CONFIDENTIALITY NOTE > The information transmitted, including attachments, is intended only > for the person or entity to which it is addressed and may contain > confidential and/or privileged material. Any review, retransmission, > dissemination or other use of, or taking of any action in reliance > upon, this information by persons or entities other than the intended > recipient is prohibited. If you received this in error, please contact > the sender and destroy any copies of this document. >