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Ultramagic Balloons (Spain)
Unicorn Balloon Company of AZ &CO
Unipart Bristol Balloon Fiesta (UK)
Up & Away Ballooning (California - USA)
Up & Ner Ballon Flyg - Sweden (Sweden)
USAF (Japanese Balloon Bombs in wwii)
USA Aloft, Inc. (Chicago - Illinois - USA)
U.S. Nationals in Battle Creek Mi. (Michigan - USA)
US National Hot Air Balloon Championships (Champaign County - Illinois - USA)
Up, Up & Away - Skylark Balloonport (USA - Iowa)