CustomizedGirl made some great logos and designs for Oktoberfest. Unfortunately she is twisting the "public domain" idea and implying you have to link to her website. That isn't true. This is public domain. You can use this as much as you want with no obligations. Feel free to link to her if you want though.
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Oktoberfest - Text free icon was designed by j4p4n for icons Png and presented to its users.
j4p4n
12/5/2017