"My thoughts on the need, the benefits of and the use cases for pattern libraries."

"In this article, I’d love to highlight some practical techniques and strategies to establish a lasting pattern library that will be actively and consistently used by the entire team. These tips might help you get on the right track when you set out to build your next style guide, assets library or design language."

Evolving Past Overlords to Centralize or Federate Design Decision-Making Across Platforms

Describes a very accessible way to get started building a pattern library, and a shared vocabulary for talking about its elements.

A live style guide is a great tool, but after it's been in use for a while, as the applications that use it grow, certain pain points appear. The style guide becomes unmaintainable or ignored. Lonely Planet has faced these obstacles and talks about a way forward, to a live pattern library.

The USA federal government has a (very good!) website style guide. It's officially the future.