Illustration October 10, 2022 Color Relativity: Video Explainer and Practical Applications Video by Light Ponderings Ryan Lord Love0
Here's another fascinating design archive curated by Reagan Ray, this time of railroad logos. https://reaganray.com/2018/02/20/railway-logos.html
You can find a ton of design inspiration in the Consumer Aesthetics Research Institute archive. https://cari.institute/aesthetics