In this article, Marcin Wichary explores the historical significance and enduring value of vintage user interface guidelines and design style guides. Highlighting a comprehensive repository compiled by developer Matt Sephton spanning from 1980 to 2014, the post also references designer Geof Crowl's broad collection of design resources. These archives feature rare and classic documents such as early drafts, the Newton platform manuals, NeXT guidelines, the Playdate design handbook, and the Zen of Palm. Additionally, the author contributes several other historical software documents to the list, including the Amiga User Interface Style Guide, Magic Cap Concepts, the Java Look and Feel Design Guidelines, and the Windows Interface Guidelines for Software Design, encouraging modern developers and designers to learn valuable lessons by exploring these foundational industry references.