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Baltimore, MD. Chances of a mechanical error escaping detection are infinitesimal in the Social Security Board Records Office and great care is excercised to guard against human error. After the employee master card has been prepared, and before it is sent on to reproduce an acturial card, indexes,
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Credit lineBaltimore, MD. Chances of a mechanical error escaping detection are infinitesimal in the Social Security Board Records Office and great care is excercised to guard against human error. After the emplo. 1937-01-01. Harris & Ewing. Harris & Ewing Collection, Library of Congress. Public domain.
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Baltimore, MD. Chances of a mechanical error escaping detection are infinitesimal in the Social Security Board Records Office and great care is excercised to guard against human error. After the employee master card has been prepared, and before it is sent on to reproduce an acturial card, indexes,
![Baltimore, Md. A coding system, which eliminates all vowels and some consonants and reduces the remaining letters of the alphabet to groups designated by six master, or key, letters is employed in the Social Security Board Records Office. The [...]ing system was adopted as a "foolproof" methods of k](https://thumbs.arkivism.com/loc-2016863063.jpg)
Baltimore, Md. A coding system, which eliminates all vowels and some consonants and reduces the remaining letters of the alphabet to groups designated by six master, or key, letters is employed in the Social Security Board Records Office. The [...]ing system was adopted as a "foolproof" methods of k
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