- YKK zippers: Why so many designers use them. – Slate Magazine
The history and business practices of the world’s best zippers.
- The History of Key Design: From Ancient Wooden Rods to the Hotel Keycard – Slate Magazine
This reminds me of the time Gill and I were walking around that Scottish castle and we left just before closing time. They had already shut the gates for the evening, so the gatekeeper pulled out this gigantic key that must have been ten inches long and about ten pounds of brass to unlock the gate.