Ever wanted to know how engineers made their calculations before digital calculators were on every workbench? [Richard ...

Learning something on YouTube seems kind of modern. But if you are watching a 1957 instructional film about slide rules, it also seems old-fashioned. But Encyclopædia Britannica has a complete ...

I’ll be honest, I have no idea how to use a slide rule. But I’ve always found them to be very intriguing, mostly because they look very complicated, and I have a soft spot for the trappings of geekery ...

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 64-page booklet was received ...