A Glen Riddle telegraph key in the Delaware County Historical Society’s collection is similar to the ones used on the battlefields of World War I and on the fateful night of the Titanic sinking. A ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Telegraph Pocket Sounder and Key, ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. Telegraph keys are electrical ...

ONE OF SEATTLE’S most spectacular — and tumultuous — celebrations began with the presidential push of a historic telegraph key. Studded with Yukon gold mined by prospector George Carmack, the key had ...

But sir, it is wafer-thin. That’s how they get you! Just when you couldn’t possibly justify building another keyboard, let alone owning one, along comes the Kambala by [aroum2]. Image by [aroum2] via ...

If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...