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Our Staff: 1924

Our Staff: 1924

Washington, D.C., 1924. "Miss Davis." Demonstrating just how easy it is to work one of these things. National Photo Company glass negative. View full size.

 

On Shorpy:
Today’s Top 5

When in doubt, choose C.

That strategy got me through many a multiple choice exam.

Unimpresseyve.

Sidney Pressey was unsuccessful with his patent for a self-scoring multiple-choice machine in the 1920s, getting only one company (Welch Scientific) to market it in 1930. B.F. Skinner was much more successful in the 1950s. The picture shows one of his earliest models. This pic shows Pressey with one of the prototypes and one of the more compact Welch models (only $15!).

Shorpy home office.

One of Dave's innumerable assistants demonstrating an early rebigulator.

The machine resembles . . .

A testing device, like the Pressey self-scoring multiple-choice machine shown here.

Higher Math

100*624*10 / 60 * 350 = 29.714

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