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Frequently Asked Questions - JFK Database Explorer

This page describes the JFK Database Explorer - what it is, the data it is based on, and how to use it.


What is the JFK Database Explorer?

The JFK Database Explorer is a tool for browsing and searching a copy of the JFK Records Collection electronic "index", or database. This database, created by the National Archives and Records Administration (NARA), contains a record for each unique document processed under the 1992 JFK Records Collection Act. There are over 300,000 documents in the database.

Each document record contains a set of fields such as title, agency, date, subjects, and several others. The Explorer lets you pick one such field and see all possible values for that field, and then see a list of records which match any particular value. Then, you may apply search filters to further refine your results.

Where Does This Database Come From?

The current set of metadata used in the JFK Database Explorer is derived from a 6-part spreadsheet provided by the National Archives at www.archives.gov/research/jfk/search.html. The NARA website is also a handy source of further information about the JFK Collection.

An earlier copy of the JFK Records Collection electronic index was supplied to the MFF by Ramon Herrera, a private researcher who used software to "scrape" the records data off the public pages of the National Archives search system. This work was done over the summer of 2015, and was in use until July 2021.

The MFF has added the additional programming to create a sophisticated browse-and-search interface to this database, and entitled the result the JFK Database Explorer.

What are RIF Records?

RIF stands for Record Identification Form. Each document in the JFK electronic index, aka database, has a unique 13-digit record number, along with various other form fields of "metadata" which describe the document. The fields are:

RIF data is shown in this Explorer in a card-like form. The title is the topmost line; the other fields are labeled in the card.

Is the Database Accurate?

This is really two questions in one:

1. Is the National Archives electronic index accurate?

2. Is this a faithful copy of that index?

As to the first question, a quick perusal of the records easily shows a substantial number of typos, mis-spellings, and multiple variations of the same term. As just one example, browsing by Document Type shows that "AFFIDAVIT" has these variants: "AFFADAVIT", "AFFADIVIT", "AFFIDAAVIT", "AFFIDAVID.", "AFFIDAVIT .", "AFFIDAVIT.", AND "AFFIDAVIT.T".

To some extent this is inevitable in such a large database. One value of this Explorer is that the browse feature allows you to see these variations firsthand, whereas a purely search-based system would often leave them hidden from view.

So the answer to question #1 is: not particularly.

As to the second question, the accuracy of this copy, the answer is yes to the best of our abilities. The MFF carefully reformatted the data in the spreadsheets into the format used in this Explorer. One exception is that where certain fields became redacted in spreadsheets when the previous version provided more information, the earlier version was retained. This affects about 80 records.

It is certainly possible that other kinds of errors or deviations from the Archives' database have occurred. If you find an inaccuracy while using the JFK Database Explorer, or a different value from that which appears in the NARA spreadsheets, please let us know at info@maryferrell.org. Indicate the 13-digit record number.

Note that the 6-part spreadsheet replaces an earlier online search page at that same NARA address. That online search is no longer provided by NARA.

No longer available: search form at NARA, now replaced by spreadsheets

Is the Database Complete and Up-to-Date?

The total number of records in this copy is 319,106, which is the same number which appear in the spreadsheets when combined and loaded into Excel. As to the metadata values, they appear to be generally up-to-date, though the MFF has not undertaken a detailed investigation. Certainly many records now have "date of last review" set to 2017 and 2018, the years when many documents were declassified or further unredacted.

Is the Entire JFK Collection in This Database?

No. The entire collection of documents residing in the JFK Collection at the National Archives is estimated to be roughly 5 million pages of documents. By adding up the Pages form field for the ~319,000 records in the database, the total page count for these documents is more like 2 million.

JFK Records Collection Register

Why the 3-million page discrepancy? Remember that the documents in this database are only those processed under the 1992 JFK Records Collection Act. Documents released prior to that time, in particular voluminous Warren Commission records, are not in this database. Also, the staff files of the Assassination Records Review Board, the body which oversaw the declassification of these records, are themselves outside the database. Each of these two major bodies created paperwork on the order of a million pages. Some of the other collections referenced in NARA's JFK Collection Register are likewise not in the database or assigned record numbers.

A smaller portion of the discrepancy has to do with records which were reviewed by the ARRB and assigned record numbers and metadata, but nonetheless are missing from this database. These include all Secret Service records (154-), all NSA records (144-) and some Army investigative records (194-). Also, the page counts reported in the metadata are not always accurate.

Browsing the JFK Records Collection Register on the National Archives' website provides some insight into the nature of the full collection, though the listing is fairly abbreviated and page counts are not provided.

What are the "2017" Records?

In response to a Freedom of Information Act request by FOIA specialist Michael Ravnitzky, in early 2016 the National Archives provided a 146-page listing of RIF records of documents. These "postponed in full" were scheduled to be released in full in October 2017.

As described on the NARA website, the 1992 JFK Records Collection Act provided for postponement of release of documents or portions of documents, with the stipulation that all such withholding would end on October 26, 2017, unless overridden by the President of the United States.

NARA released some documents on July 24, 2017. When the October 26 deadline for full release finally arrived, President Donald Trump signed an order allowing continued withholding of most of the remaining records, pending further review. Seven sets of releases followed, the last on April 26, 2018. See the MFF's 2017/2018 Document Releases page for much more details including online access to all the released records in the MFF Document Archive.

There remain at least several hundred withheld-in-full records, over 15,000 documents still feature redactions.

In this Explorer, the records listed in the 146-page PDF are marked with "planned for 2017" on their record cards. Those released in 2017/2018 show their release date(s). The following shows those markings in the title area of the record card:

A record card with checkmarks denoting that it was planned for 2017 release, was released on 11/02/2017 and again on 04/26/2018, and is in the MFF Archive.

You can also explore the newly released records in these ways:

1. use the filter panel available to refine any search result to refine the search based on release date and whether in the planned 2017 set or not (see How to Use This Explorer section subsequently)

2. use special links at the top of the main page of the Explorer to view all records, all 2017/2018 released records, or just those in the set of withheld-in-full documents planned for release (see below):

Special links near top of main JFK Database Explorer page

Why Can't I View All the Documents?

The National Archives website allows you to search the JFK Collection and view the metadata records, but not the actual document pages themselves. Here at the MFF, often you can take that next step.

But only a subset of the full JFK Collection is available.

The Mary Ferrell Foundation website contains over 2 million pages of searchable and viewable documents. Well over 1 million of those pages are JFK Collection documents; others relate to the assassinations of Martin Luther King Jr. or Robert Kennedy, or other topics such as Watergate.

So given that the complete JFK Collection holds approximately 5 million pages, then only about 20% of those pages are viewable online.

In terms of just the documents processed under the JFK Records Act, the percentage is slightly higher. Of the roughly 319,000 documents in the database, over 100,000 are available on MFF. That's a little over 30% of the total.

Why not 100% of the documents? The Mary Ferrell Foundation is not the National Archives, and we must obtain paper copies of these documents, scan them, and then process and upload the results. This is very time-consuming, especially the first step of acquiring paper copies. The MFF's relationship with the Assassination Archives and Research Center (AARC) has been critical to this effort.

The documents on this website come from a variety of sources, but most particularly:

Documents which you can view online are marked specially by a red "View Document" button on the record card:

A record card with View Document button for online viewing here at MFF

Note that sometimes the MFF copy of a document may not be the most up-to-date version available, in terms of redactions. In these cases, the JFK Database Explorer information will be current (as of 2021), but the first page of the document, the scan of a printed RIF form page, will have older information.

There are also cases where the MFF has more than one copy of a given record. In these cases, the View Document button will provide a menu and allow you to pick which to view. If the document is of particular interest, you may want to view all copies. See the blue menu below the button:

How To Use This Explorer - A Quick Tutorial

The JFK Database Explorer has a powerful search engine wrapped inside a browse interface. The main page at www.maryferrell.org/php/jfkdb.php presents many ways of getting started:

Choices for browsing on main JFK Database Explorer page

If you pick one of the first three options, you will immediately see the first page of a list of metadata "cards" of data (each card is the data one document). You may then immediately start using a slate-grey filter box to refine the list.

Or, pick a field such as Agency, Subjects, or Date. When you click on one of these links, you will be taken to a browse page. For example, if you picked "Record Series" to browse by, you will see this page:

Browsing by Record Series

Each row shows you a value for this field to the right, and to the left of it are three numbers::

Note the light blue sort bar, which lets you sort the resulting list alphabetically, or by document count (entries with higher documents are listed at the top). Below that, if there are more than 100 entries, a paginator lets you flip to different pages of 100 rows.

Some fields, such as Subjects, From, and To, have so many entries that a second level of "drill down" browsing is used. So for example if you select Subjects from the main page, the next page simply lists the first letter A-Z, and then you drill down into the rows of values starting with A (or B, or C, ...).

Click on a given value (in red), and you will be taken to a search results page, which shows the actual RIF records for matching documents:

Search results, in this case records whose Record Series matches the value

Note that the sort bar has changed - these results pages can be sorted by record number, title, agency file number, or date. Instead of a paginator, there is a Next>> link for the next page of 20 results (and <<Prev if you are not on the first page).

The records include a top stripe with the following:

Top stripe of a RIF card showing the optional items

The larger bottom part of the card shows the remaining RIF form fields and their values. The field being browsed is boldfaced.

But wait! These cards are not static. Click on any field's value, and you will instantly be taken to a search page showing all records with a matching field:value pair.

A last powerful feature is the Filters link at the right side of the sort bar. Click it to drop down a filters panel. Here, you may refine the result set, filtering it by only documents within a date range, or only documents viewable on MFF, or in other ways.

Filter panel, used to winnow down the set of matching documents

The "click-on-field" feature, and the Filters panel shown above, combine to make a very powerful search engine inside the overall browse structure. They allow for a huge range of exploration of the JFk Collection Database. Explore away!

How Does the Explorer Relate to the RIF Search Page?

The MFF's RIF Search page is unchanged, and is only used for searching the RIF-based documents whose pages are available for viewing on this website.

The JFK Database Explorer, by contrast, lets you browse and search/filter the entire set of RIF-based documents in the JFK Collection. You are still obviously limited in terms of which ones you can view fully.

The two tools are complementary, and both useful. The JFK Database Explorer is in some ways encompasses the functionality of RIF Search and adds more. On the other hand, the RIF search tool can be more quickly used to look up a document by record number or in certain other ways, if you are only interested in the subset of documents actually viewable on the MFF.

Why Do I Sometimes See: "JFK Database Explorer Records Limit Reached"?

If you are not a member, or not logged in, you may use the JFK Database Explorer for a bit and then see this page:

While the JFK Database Explorer's drill-down "browse by field" mechanism is fully open, the search results pages which show cards of records are not. Just like the MFF's regular and RIF search features, only a limited number of free searches are afforded non-members.

The MFF is as dedicated as always to providing access to these valuable materials, and has never locked out any particular documents or pages for members-only treatment. But there are bills to be paid. Our best compromise approach to that reality has always been this: to limit usage of some of our tools to members-only, but not limit the viewability of documents, essays, or other materials per se. The JFK Database Explorer follows this model.

Supporting memberships, which provide unlimited searches of all search types, including this tool, are available for only $34.95 per year. Pro memberships, at $79.95/year, add the ability to download PDF copies of documents for offline reading, printing, and other uses.

Please support the work we do, providing not only the largest online collection of documents on these topics, but also sophisticated tools like the Mary Ferrell Database, Stewart Galanor's Dealey Plaza Witness Database, the CIA Cryptonym Project, and now the JFK Database Explorer.

Learn more about a Mary Ferrell Foundation Membership


The programming of the Explorer page was done by the MFF's Rex Bradford, using data extracted from a 6-part spreadsheet at www.archives.gov/research/jfk/search.html, created by the National Archives. Thanks also to Ramon Herrera for providing the data that went into the original dataset used in this project from 2015 through 2021.

Reporting a Problem

If you see a record which doesn't match its counterpart at the National Archives website, or see some other problem, send us an email at info@maryferrell.org. Please be as specific as possible regarding the issue you see, for instance:

  • Missing record: record present on NARA is missing from this Explorer
  • Different data: record fields on NARA are different from this Explorer
  • Other problem: clicking View Document doesn't work, blank page, whatever

Include screenshot if you can, and MOST IMPORTANTLY include the 13-digit record number of the document in question.

Thanks for helping us verify and improve the JFK Database Explorer!

Support the MFF!

Support the MFF's efforts to bring more documents online and more sophisticated tools like this one for using them. Memberships help us pay the bills and provide special features including unlimited search and access to PDF copies of documents. Thanks for using this site and for your support.

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