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For #1, you need what you asked for, probably, if you want the subject headings to be consistent with other LCSH on the rest of your records. For #2, you can provide a useful topical/subject type heading via much simpler and more feasible solutions than mapping to LCSH. For #2, you don't need a map to LCSH, you need the LCC schedules with descriptions of what each range of LCC call numbers is for, in machine-readable form. (Along wtih an algorithm to determine if a call number is in a range of LCC call numbers, which is trickier than you might originally think becuase LCC call numbers sort oddly). If you are interested in that approach, it's a different question, which no doubt some people on this list can provide tips for. > Thanks everybody! > > this is useful for a couple of purposes > 1) sometimes we have records that have call numbers, but no subject headings. > this would be useful to provide those. > 2) i'm thinking of providing a 'subject heading' label to our shelf browser -- > so users see, in addition to the callnumber -- what the call number means. > > thanks again! > rick > > > > On Tue, Oct 18, 2011 at 2:33 PM, Jonathan Rochkind<[log in to unmask]> wrote: >> Anyone know if the OCLC Terminology Service provides such a mapping? The >> Terminology Service may be free if you are already an OCLC cataloging >> member. >> >> At one point I think I saw an absolutely free open access machine readable >> mapping somewhere, that was made at some point in the past and no longer >> updated... but I cant' remember where I saw that even. >> >>> 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. >>>> > >