Planet Catalog posted [http://planetcataloging.org/] the following today which is worthy of checking out:
“The Browse LCSH database (6.5m records) now includes the complete file of 266.857 terms that was made available by the lcsh.info project. That means you find links from our database to the record in lcsh.info to view their innovative display. The notes contained in the lcsh.info records have been included too. LC classes are indexed as well and can be browsed, to find LCSH terms.
LC has improved the findability of authority records recently. They have added a keyword search to the database.”
Although I have the 29th edition of the LCSH, I frequently use “the database” for cataloging work.