lcsh.info

lcsh.info is "an experimental service that makes Library of Congress Subject Headings available as linked-data using the SKOS vocabulary. The goal of lcsh.info is to encourage experimentation and use of LCSH on the web with the hopes of informing a similar effort at the Library of Congress to make a continually updated version available."

http://lcsh.info/

(Collocate and Disambiguate blog)