You are probably safe doing this, but the last 4 digits are NOT unique to
one person. Each unique 1st 5 digits would/could have the same last 4
digits.
A Social Security Number (SSN) consists of nine digits, commonly written as
three fields separated by hyphens: AAA-GG-SSSS. The first three-digit field
is called the "area number". The central, two-digit field is called the
"group number". The final, four-digit field is called the "serial number".
The process of assigning numbers has been changed at least twice. Until
1965, only half the group numbers were used. Before 1972, numbers were
assigned by field offices; since 1972, they have all been assigned by the
central office. The order in which numbers were assigned was changed in the
1972 transition. There may have been other changes.
Serial numbers are assigned in chronological order within each area and
group number as the applications are processed. Serial number "0000" is
never used. Before 1965, when number assignment was transferred from field
offices to the central office, serial numbers may have been assigned in a
strange order. (Some sources claim that 2000 and 7000 series numbers were
assigned out of order. That no longer seems to be the case.) Currently, the
serial numbers are assigned in strictly increasing order with each area and
group combination.
This is from a site found by searching "social security number structure".
http://archive.cpsr.net/cpsr/privacy/ssn/ssn.structure.html
Sharon
----- Original Message -----
From: <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Saturday, April 29, 2006 3:46 PM
Subject: Re: [LegacyUG] Mary Brenzel's filing system
Mary's system is surely easy to use and I thank her for sharing her
system.
But I would make one small change...grin...with the SSDI file. It is my
understanding that the last four digits of an SSN are unique to one
person.
Thus, I would file the document as [surname], [given name], [last four
digits of
the SSN] and the file designation would be Jackson-John-1234. I would
use
the hyphen as a separator just for readability.
Jon Raymond
St Paul Park, MN
Web site: http://freepages.genealogy.rootsweb.com/~raymond/
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