Pencils
Lead in Pencils: Safety Information and Facts - Pencils.com
How Pencils Are Made : NPR Ed : NPR
Which element is used inside a pencil? - Quora
What Makes #2 Pencils So Special? | Mental Floss
Who Invented the Carpenter Pencil? - Uses, Lead, & Alternatives - STKR Concepts Europe
Pencils vs Mechanical Pencils – The Eagle Angle
Why is graphite used in the manufacturing of pencils? - Quora
Pencils
Types of Pencils and Pencil Lead: Finding the Best Pencil for Writing
What Is Pencil Lead Really Made Of? | Pens.com
Pencils
A guide to pencil lead grades - The Pen Company Blog
The Beginner's Guide to Mechanical Pencils | JetPens
All About Pencil Lead – The Paper Mouse
TIL that pencils historically never had lead in them, they in fact always had graphite. When graphite was discovered, it was thought to be a form of lead, hence calling it "lead"
The Write Stuff: How the Humble Pencil Conquered the World
Pencils never contained lead. | Office for Science and Society - McGill University
What Are the Different Types of Pencil Lead? - Quality Logo Products
Pencils and Pencil "Lead" - Missouri Poison Center
How do they get the graphite leads into a pencil? - Quora
Different Types Of Pencil Lead Grades: A Guide | Art to Art | Art Supplies Online Australia - Same Day Shipping | Art to Art - Art Supplies
Mechanical Pencil Lead Size Comparison | JetPens
Pencils
