- Absolutely Public Relations
 - Denver - Public relations consultant based in Denver, Colorado, specialising in trade and national news releases and local media relations. - C/A Russell Partners
- Denver - Provides business, economic, government, and regional information for the state of Colorado.
- Cause Communications
- Denver - Helps activists and nonprofits publicize important issues.
 Incendio International
- Denver - Provides communications strategy, media training, and investor and analyst relations.- MarketAbility, Inc.
- Golden - Providing promotion, publicity services, and book marketing training.
- Pfeiffer High Investor Relations, Inc.
- Denver - Offers investor relations and graphic design services, including annual reports, media tours, direct mail programmes, corporate profiles, and sales literature.
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