日本航空の新ロゴ : これ、誰がデザインしたの？
NASA 50th Anniversary logo. Emmy, you are officially allowed to say "SQUEEEEEE!"
50th Anniversary Logo by Jay Yeater, via Behance
Pan American Development Foundation 50th Anniversary Logo, by Beth Singer Design
Winning logo Design for a Spanish 50th anniversary
Tel Aviv 100 -- Poster for festivities of Tel Aviv 100th
Prarie Lakes Healthcare System. Simple but dynamic. I like how the date and the word "years" pulls the logo together, and creates a horizontal line, countering the diagonal between the 2 and 5.
Happy 20th Anniversary Adobe Acrobat and PDF « Adobe Document Services
sfu 50 logo - Google Search
Dribbble - Summit League 30th Anniversary Logo by Kristopher Bazen