Before the smartphone, the laptop and the pocket calculator, there was a powerful mechanical computer. Our new series, Tools of the Trade, begins... The Slide Rule: A Computing Device That Put A Man ...

When you look at the Dow Jones Industrial Average or a bank statement or your receipt at the grocery local store, do you ever stop to think about how numbers are actually processed? (It’s OK – you won ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. This 9-1/2 inch paper linear slide ...