Publishers
Every publisher in the catalog, from the majors to single-book imprints.
- Unique Heritage Entertainment
- Unisa
- Unitas
- United Dead Artists
- United Fanzine Organization
- United Feature Syndicate
- United Front Press
- United Labor Committee of Massachusetts
- United Labor League of Ohio
- United Methodist Publishing House
- United Newspapers
- United Plankton Pictures, Inc.
- United Publications
- United States Army
- United States Department of Justice
- United States Department of Labor
- United States Department of the Interior
- United States Information Agency
- United States Information Service
- United States Marine Corps
- United States Postal Service
- United States Rubber Company
- United States Treasury
- United States Trotting Association
- United Transportation Union
- Unity
- Univers Comics
- Universal Comics
- Universal Feature and Speciality Co.
- Universal Records Publishing
- Universiteit Utrecht
- Universitetsforlaget
- University Press of Mississippi
- University of Arizona Press
- University of British Columbia Fine Arts Gallery
- University of California Press
- University of Chicago Press
- University of Hawai'i Press
- University of Illinois Press
- University of Iowa Press
- University of Kansas
- University of Kentucky
- University of Leeds's Doctoral Training Centre in Low Carbon Technologies
- University of Luxembourg
- University of Oklahoma Press
- University of Pittsburgh Press
- University of Rhode Island
- University of Texas Press
- University of Toronto Press
- University of Virginia
- Université libre de Bruxelles
- Universitéit Lëtzebuerg
- Universo
- Unknown
- Unknown Australian Publisher
- Unknown Danish publisher
- Unknown Publications
- Unknown Supermarket
- Unknown publisher (Unknown Country)
- Unleashed Comics
- Unlikely Heroes Studios
- Unlimited
- Unlimited Comics
- Unlimited Comics
- Unne
- Unorthodox Press
- Unparalleled Comics
- Unrast
- Unrated Comics
- Unsane Ink
- Unser Verlag
- Unserverlag
- Unshaven Comics
- Unsichtbar Verlag
- Untamed Comics
- Unwin & Hyman
- Uofficielle Synspunkter
- UpDown Studio
- Uphill Battle Boekpromotie
- Uppenbar litteratur
- Upper Comics
- Upper Deck
- Urax förlag
- Urban Bikeway Design Collaborative
- Urban Comics
- Urban Ministries, Inc.
- Urban Sequence
- Urban Society for Aboriginal Youth
- Urban Style Comics
- Urbanophil
- Urtekræmmeren i Larsbjørnstræde
- Usborne
- Usborne Publishing
- Usharp Comics
- Usonzobook
- Ustaški nakladni zavod
- Uta-Verlag
- Utopia
- Utopia Studios
- Utslag
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