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KEYWORDS: SCIENCE, HEALTH & TECHNOLOGY

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Date Format Image Collection
September 1932 Illustration  Drawing of a man typing with the help of a spring suspended from the ceiling. Visual Still
August 1931 Illustration  A drawing of the basic wheelchair in use at Warm Springs. Visual Still
February 1933 Illustration  A design drawing of a ramp. Visual Still
214.
Steps
February 1933 Illustration  A design drawing of stairs with railings. Visual Still
November 16, 1842 Letter    Document
February 11, 1901 Letter    Document
January 29, 1901 Letter    Document
January 30, 1901 Letter    Document
November 11, 1842 Letter    Document
July 22, 1842 Letter    Document
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