Stowe is a classic logo that hasn't changed since the early days of the resort and town. So rather than mess with something so clean and recognizable, they simply added a stylized number 85 peeking up and from behind the original mark. The result fit neatly on social media icons and marketing materials alike and kept things nice and simple.
Source:
https://www.slopefillers.com/ski-resort-anniversary-logos/
Cameron & Mittleman LLP
40th Anniversary Logo
Source: https://www.linkedin.com/posts/michael-lourie-a1124b1_clientspotlight-branddesign-40yearmilestone-activity-7419423671750131712-YL1M
Delta Airlines
100th Anniversary Logo
Source: https://reeseandstuff.com/#/delta-air-lines-100-for-100/
Colorado
150th Anniversary Logo
Source: https://www.prnewswire.com/news-releases/colorado-launches-campaign-to-recognize-150-years-of-statehood-alongside-americas-250th-anniversary-302352263.html
Barley Brown's Brew Pub
25th Anniversary Logo
Source: https://newschoolbeer.com/home/2023/5/a-toast-to-barley-browns-brewpub-on-25th-anniversary-milestone
