Brief Amici Curiae of American Library Association [et al] in Authors Guild [et al] v. Hathitrust [et al]
http://www.librarycopyrightalliance.org/bm~doc/lca-amicus-hathitrust-appeal-03june13.pdf
Friend of the court brief filed by library groups to support established library practices and the concept of fair use in treatment of copyrighted works. From the Library Copyright Alliance