Historical references have described the act of fastening papers together for at least 8 centuries, but the paper clip was not invented until 1899.
NATIONAL PAPERCLIP DAY - May 29, 2024 - National Today
The history of the paper clip: It was invented in 1899. It hasn't been improved upon since.
Object Lessons: The Surprisingly Complex History of the Humble Paper Clip - Remodelista
Paper Clips
App Clips Overview - Apple Developer, clip
5 Norwegian Inventions You Should Know About
The perfection of the paper clip : curious tales of invention, accidental genius, and stationery obsession : Ward, James, 1981- : Free Download, Borrow, and Streaming : Internet Archive
5,300+ Metal Clip Stock Illustrations, Royalty-Free Vector
The History and Invention of the Paperclip
Paper Clips
The Perfection of the Paper Clip: Curious Tales of Invention, Accidental Genius, and Stationery Obsession: Ward, James: 9781476799865: Books
Albert J. Parkhouse: Inventor of the First Coat Hanger