Both Sides Now Album Discographies - Album discographies for over 250 different labels from the 1950s-1980s. Each has albums issued, artists, dates of issue, and where known, all songs and whether each song is true stereo, mono, or electronically rechanneled.
Hectic World - A collection of links to Punk labels.
Hertz-Lion/YIELD - A source of information about and label/catalog releasing Experimental music.
IIPA - The International Intellectual Property Alliance is a coalition of associations representing the United States copyright-based industries.
Mischpoke Musikproduktion - Independent label and portal for the German music business. [English and German]
Record Labels on The Web - Database of record label web site links searchable by location and genre.