20thcenturypix: heck-yeah-old-tech: Historical spread: The premiere of the Slinky in Popular Science, Sept 1946. “It is simply a spring, but it does stunts that made R. P. James, Philadelphia engineer, think of converting it into a toy. […] ‘Slinky’
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20thcenturypix: heck-yeah-old-tech: Historical spread: The premiere of the Slinky in Popular Science, Sept 1946. “It is simply a spring, but it does stunts that made R. P. James, Philadelphia engineer, think of converting it into a toy. […] ‘Slinky’
