You have to love law librarians and others who go where others fear to tread (e.g. the journalist who forced open some MP (Member of Parliament) records about their taxpayer funded expenditures).
Mary Whisner, at the Gallagher Law Library, University of Washington, has posted a link to her article about the Law Behind the Mattress Tags (101 Law Libr. J. 235 (2009)).
(The Law Library Journal archives can also be found at the American Association of Law Libraries (AALL) website.)