This is the "read me" file about how Simon Spero harvested 6.95 million authority records from LC. Records are available in MARCXML at http://www.ibiblio.org/fred2.0/authorities/

"So begins the PDF announcing and detailing a major new development for the library-data world. Simon Spero, library-geek extraordinaire, has released a nearly complete copy of the Library of Congress Authority Files.

Get them here:
http://www.ibiblio.org/fred2.0/authorities/

Simon assembled the files, available in MarcXML, by querying the Library of Congress' Authorities website one-by-one over months. He's a patient man."

Library of Congress Cataloging Distribution Service will begin to issue genre/form authority records (MARC 21 tag 155) no earlier than September 3, 2007