FBI Serial Resolution Map

What Is This?

Every FBI investigation assigns serial numbers to evidence. Case NY-09-3581 used 3501.XXX for Non-Testifying Witness Material (NTWM) and 3502–3524 for Testifying Witness Material (TWM). This visualization maps which FBI-indexed documents are present in the DOJ's public release—and which are missing.

Five Index Sources

1. NTWM Index (EFTA00095751) — 3,975 sub-document entries across 546 serial numbers under prefix 3501.

2. TWM Index (EFTA00021968) — 270 entries for testifying witness material, prefixes 3502–3524.

3. Interviews 136 (EFTA00016612) — 143 serials cataloging interview records.

4. Sentinel Serial Report (EFTA01688359) — 258 serials from the FBI's Sentinel case management system.

5. 1A/1C Evidence Log (EFTA00013397) — 146 physical evidence items with acquisition dates and serial assignments.

Resolution Method

We searched all ~2.9M corpus pages for FBI serial references using two approaches: regex matching against page text content, and OCR of secondary Bates stamp regions on page images.

A document is "Found" if we located it in the DOJ release. "Missing" means the FBI index lists it but it appears nowhere in the released pages.

Why It Matters

A 29% resolution rate means more than two-thirds of FBI-indexed evidence is missing from the public release. That includes victim interviews, photographs, financial records, and investigative notes that the FBI cataloged but never produced.