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 ...

This 1942 ad for a comptometer is just perfect because first of all, I had no idea what a comptometer was (a mechanical calculator, basically) and second, the spec sheet is wonderful: no glare dials, ...

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 ...

SIR – I can well remember comptometers (Letters, March 31). I worked for London Transport in the 1960s in their office at the old Hillingdon Station. There were about 48 women in eight sections and ...

This key-driven, non-printing adding machine is an early example of a Comptometer with a metal case. It has eight columns of plastickeys. The keys in the two rightmost columns, which represent cents, ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. By the 1880s, American business and ...

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 ...