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Ancestry.com Wiki - Using the Soundex with Census Records
This article originally appeared in "Census Records" by Loretto Dennis Szucs and Matthew Wright in The Source: A Guidebook to American Genealogy. This wiki is a free service of Ancestry.com.
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Blank form to print.
[The original link is broken. This link points to an archived copy on the Wayback Machine] -
A JewishGen InfoFile which includes two parts: I. Russell (NARA) - II. Daitch-Mokotoff (D-M).
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From the National Archives & Records Administration.
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by Gary Mokotoff.
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A book by Willis I. Else. Includes the H & W rule.
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The WPA Census Soundexing Projects
By Claire Prechtel-Kluskens for Prologue, the quarterly of the National Archives and Records Administration.
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Yet Another Soundex Converter (YASC)
Updated with the H & W rule.
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United States » U.S. Census » Soundex
15 Links
NOTE TO RESEARCHERS: Please be aware that a formerly "lost" rule for calculating Soundex codes has been rediscovered. This rediscovered rule is called the "Ashcraft" or "H & W" Rule. In addition to the existing Soundex calculation rules, add:
If "H" or "W" separate two consonants with the same soundex number, the "H" or "W" is disregarded, and the second consonant is not coded
The Soundex Indexing System web page on the National Archives site has been updated to include this previously "lost" rule. Not all of the links below include this extra rule. Use the National Archive's Soundex page as your definitive source.