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- Freeze Frame
- Texas Flyer wanted
- Just a Year Too Soon
- WWII -- Replacing men with women at the railroad crossing.
- Yes, Icing
- You kids drive me nuts!
- NOT An Easy Job
- I wonder
- Just add window boxes
- Icing Platform?
- Indiana Harbor Belt abides
- Freezing haze
- Corrections (for those who care)
- C&NW at Nelson
- Fallen Flags
- A dangerous job made worse
- Water Stop
- Passenger trains have right of way over freights?
- Coal
- Never ceases to amaze me.
- Still chuggin' (in model form)
- Great shot
- Westerly Breeze
- For the men, a trapeze
- Tickled
- Sense of loneliness ...
- 2 cents
- Charm City
- What an Outrage
- Brighton Park
Photos submitted by Shorpy members!
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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.
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.
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