The Oregon Duck's primary logo of the letter "O" has become a classic logo.
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1999 - Present
A green letter “O.” The letter “O” represents the state named Oregon.
1994 - 1998
Green interlocking letters “OU” with yellow outline. The letters “OU” represent Oregon University.
1974 - 1993
Donald Duck pumping his fists walking through a large eight-sided letter “O” yellow and green. The letter “O” represents the state name Oregon.