About this time 130 years ago, Dorr Felt, of Chicago, invented the Comptometer. I learned that while looking up something else. A major method of learning interesting things is to look up something ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. The titles Include Ropp's New ...

HOLLAND — With the sun shining and the temperatures in the mid-60s, it felt like a perfect afternoon for the Felt Mansion Estate, 6597 138th Ave., in Holland. The drive through the countryside on a ...

Dorr Eugene Felt Tippens, a chemical engineer and decorated World War II aviator who devised the formula for a type of brown sugar, died of leukemia Saturday at Roland Park Place. He was 80 and had ...

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 photograph shows Dorr E. Felt's ...

Dorr Felt, in some respects, was the Steve Jobs of his generation. Much as Jobs' Apple and Macintosh revolutionized how computers were used, Felt's comptometer changed how businesses kept their ...

Q: I was wondering what happened to the Allentown Comptometer School that was directly across from Hess’s Department Store? I don’t even know what a Comptometer was, but I remember the school. A: The ...