Osborne Enterprises and Jellyroll Productions Producer of price guides (in the "Official Price Guide" series) and reference books for music collectibles. General descriptions of each volume. http://www.jerryosborne.com/

All Music Guide Comprehensive guide to recordings in every genre. Cross-indexed source of reviews, essays, and ratings, all available online, on in-store kiosks, and in print form. Uses submissions from readers. http://www.allmusic.com/

Muze Longtime publisher (over 50 years) of directories of recorded music for retail stores; their data is now available for purchase to place on other websites and in-store kiosks. http://www.muze.com/

Joel Whitburn's Record Research Books Information from Billboard magazine's major charts with complete chart data on every recording ever charted. Short descriptions and sample pages from this large line of books. http://www.recordresearch.com/

Rough Guides Over 30 music guidebook titles; features online versions of their Rock, World, and Classical guides. http://www-2.roughguides.com/music/

RecordResearcher.com CD-ROM discography RockRom 8, and book Rock Record 7, with 500,000 records, over a million tracks and musicians. Free sofwared demo download. http://www.recordresearcher.com/

Hot Wacks Press Publisher of guides to bootleg records and CDs. Information about the books, and three articles about bootlegs (recordings of live music of questionable legality). http://log.on.ca/hotwacks/

Gramophone Classical Good CD Guide Brief description of the guidebook to classical music. http://www.gramophone.co.uk/publications_detail.asp?pub=2

Trouser Press Official site of Trouser Press magazine (1974-1984) and the Trouser Press Record Guides. Reviews and discographies from five editions of the guidebook. http://www.trouserpress.com/

Krause Publications Publisher of several record and CD collecting related books, including price guides. http://www.krause.com/static/records.htm

8-Track Lesbian Diary of a collector, including pictures of interesting finds. http://home.earthlink.net/~trakdyke/blogger.html