- Abracadabra Booksearch International
 - Denver - Locating those hard-to-find books and completing collections. - Book Gallery
- Boulder - Used and unused hardcover books, specialising in scholarly, academic, unconventional, and eclectic.
- Books West
- Boulder - Distributor of western and southwestern regional titles.
- Boulder Book Store
- Boulder - Independent community bookstore since 1974.
- Continental Book Company
- Denver - Offers Spanish, bilingual, ESL, French, German, and Italian materials.
- Impact
- Parker - Aircraft study guides for professional pilots.
- Landmark Audiobooks
- Boulder - Audio book leasing for libraries.
- Learning Collection, LLC
- Denver - Children's book wholesaler specialising in the trade books for emergent, beginning, and early independent readers.
- Mountains and Plains Booksellers Association
- Fort Collins - Nonprofit trade association of independent booksellers, book wholesalers, and publishers located throughout the Rocky Mountain region.
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