Digital National Security Archive offers several Look ups or browsable indexes so you can easily find spelling or format variations of, for example, an author's name. You can find the Look up links in the advanced search page and they are available for the following searchable fields: main subject, company/organization, originating sources (origin), person,and classification.
For a description of these fields, please see the searchable fields table to the right.
Note: Look ups are also available from the Command Line search (through the Look up terms link).
To use and locate a Look up or browsable index, select the field from the advanced search pull-down menu. If a Look up is available, under the search row you will see a link to theLook up. Other Look ups and browsable indexes will be listed in the Limit To section of the advanced search page.
Select the Look up link and then you will see a browsable and alphabetical index for that field. There are some indexes that will not display an alphabetical list before searching for the term, rather you will have to enter a term first, and then the alphabetical list of matches will display.
Once you locate the index term that you would like to add to your search, mark the item, and then click the Add to search button. The index term will now appear in the advanced search form along with the appropriate pull-down menu selection.
|Search Field||Field Code||Example/Description|
AB searches for specified keywords in the abstract only.
AN searches the DNSA Accession and Document numbers and the ProQuest document ID.
BIBLIO(YES) restricts a search to the NSA bibliographies only.
CHRONO(YES) restricts a search to the NSA chronology documents providing a timeline for each collection.
DNCL searches for documents with a specified classification.
DNOP searches for records with the specified operation code word.
ORG searches for documents relating to a specific company / organization.
TI searches for keywords in the title of the document.
DNCO retrieves documents from a specified DNSA collection.
DNSADOC(YES) restricts a search to the DNSA primary documents only, so excludes the NSA supporting material.
|DNSA document type||RTYPE||
RTYPE searches for documents with the specified DNSA document type.
|DNSA record type||RECT||
RECT searches for documents with the specified DNSA record type (Document, Glossary, Chronology or Bibliography).
GLOSS(YES) restricts a search to the glossary entries in the NSA supporting material for each collection.
NT(Central Security Service)
NT searches for keywords in the document notes field.
AU searches for documents written by a particular institution / organization.
PER searches for documents related to a specific individual.
RC searches for documents sent to a particular individual / organization.
MAINSUBJECT("Armitage, Richard L")
Use this field when looking for subjects that have been elevated by editors to be a main subject. This will normally reveal fewer results than a SU search (see below).
This field has a Look up for accuracy in selecting a subject or multiple subjects.
SU searches for documents related to a particular subject