Archival Digital Imaging , creates CD-ROMS for librarians and collectors of US history. Government Works Works produced by the U.S. Federal government are not copyrighted. See here for details and here for more details. Catalog is in the PD, publications listed in the Catalog are usually in the public domain, although it would be a good idea to touch base with the publishing agency if planning to go commercial. In Macintosh format.
Sounds demonstrate the possibilities of applying fractal and chaos technology to music composition.
Online Books FAQ , addresses the availability of public domain sources of Etext available on the Internet. All postings to the list are in the public domain.