Continually published since 1771, what is the name of the oldest reference work in the English language, still published today?

Originating in Edinburgh, Scotland, during a period of great intellectual ferment, this famous work has been in continuous publication since its first edition was completed in 1771. It began as a relatively modest three-volume set, conceived by its founders as a new kind of reference that organized human knowledge for the educated reader. Its success was immediate, and it quickly established itself as a benchmark for accuracy and comprehensive scholarship, making it the oldest general encyclopedia in the English language still produced today.

Over the next two centuries, the encyclopedia expanded dramatically, growing into the iconic, multi-volume collection that became a fixture in libraries and homes. For generations, owning a set was a symbol of intellectual aspiration and access to authoritative, expert-written information. To maintain its long-running publication streak in the face of new technology, the company made a pivotal decision. After the 2010 edition, it ceased its print version and transitioned into a fully digital resource. This evolution from leather-bound volumes to a dynamic online platform highlights its remarkable endurance and adaptation.