All About Lean – The history of Lean, amongst other things, by Christoph Roser

Bob Emiliani – Lean leadership books, articles, and videos

Creative Safety Supply – Lean education articles

The Lean Management Journal – Leadership in process improvement

Lean Blog – Lean in hospitals, business, and our world, by Mark Graban

Lean Ohio – Lean guides, tools, and training materials from Ohio State Government

Lean Manufacturing – Lean tools and glossary

Lean Simulations – Collection of Lean games/simulations, videos, and blog posts