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KEYWORDS: SCIENCE, HEALTH & TECHNOLOGY

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Artifact Title	Date	Format	Image	Collection
271. The Hollerith Method Of Statistical Tabulation	October 12, 1899	Article		Document
272. The Sorting And Counting Mechanism	October 12, 1899	Engraving		Visual Still
273. The Card Removed From The Press And Deposited In The Sorting-Box	October 12, 1899	Engraving		Visual Still
274. One Of The Counters	October 12, 1899	Engraving		Visual Still
275. Key-Board For Designating Individual Records	October 12, 1899	Engraving		Visual Still
276. Gang-Punch For Punching The Enumerator's Combination	October 12, 1899	Engraving		Visual Still
277. A History Of The Social Security Disability Programs	January 1986	Government Document		Document
278. Henry C. Smith To Samuel Gridley Howe, July 22, 1842	July 22, 1842	Letter		Document
279. Hearing aids 02	circa 1915	Photograph		Visual Still
280. Hearing Aid Collection	circa 1910	Photograph		Visual Still

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