Mexico's Zapatista rebels, 24 years on and defiant in mountain strongholds, Global development
Photo Essay: A Visit to the Zapatistas' First International Gathering of Women Who Struggle – National Geographic Society Newsroom
Struggling on: Zapatistas 20 years after the uprising - BBC News
We don't need permission to be free” – Briarpatch Magazine
The Evolution of the Helmet
Mexican Rebel Leader Subcomandante Marcos Retires, Changes Name - WSJ
Appalachian State - HELMET HISTORY
The Evolution of Football Helmets timeline
Appalachian State - HELMET HISTORY
Evolution of Football Helmet 1893 - 2020 American football helmets History