Some History

Christopher Alexander

• A Pattern Language, 1977
• A Timeless Way of Building, 1979
• patternlanguage.com

OOPSLA - Object-Oriented Programming, Systems, Languages, and Applications

The Gang of Four (GoF) :

• Erich Gamma
• Richard Helm
• Ralph Johnson
• John Vlissides

1995 - Design Patterns: Elements of Reusable Object-Oriented Software