Lewis & Clark Research
- Market research for the magazine and newsletter publishing industry.
- http://www.readersurvey.com/

Northern California Book Publicity and Marketing Association
- Covers the aims of the association: education about the publicity, promotion, marketing and distribution of books throughout Northern California. Features a job bank for the industry.
- http://www.ncbpma.com

Twin Peaks Press
- A marketing, PR and mailing list service catering to small businesses, publishers and audio/video producers.
- http://home.pacifier.com/~twinpeak/

Mockfear Enterprises SP
- Business promotion of author materials and sales of manuscript.
- http://www.mockfear.com/

Top 5 Best
- Weekly updates of the best selling books.
- http://www.top5s.com/books.htm

NetRead's JacketCaster
- Maintain current book information with the major wholesalers and online retailers.
- http://netread.com/jacketcaster/

Book Marketing Update
- Marketing and promotion tips for authors and publishers.
- http://bookmarket.com/

MarketAbility
- Colorado book marketing company. Site has advice and information about marketing, distribution and PR.
- http://www.marketability.com/