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FBI Vault, Nikola Tesla file, 2026-10-08

URL: https://vault.fbi.gov/nikola-tesla (Chrome; curl gets a 5 KB block page). Investigator (STEP I).

What was checked

  • Vault listing: three parts, "Nikola Tesla Part 01", "Part 02", "Part 03 (Final)" [web: https://vault.fbi.gov/nikola-tesla].
  • Each PDF was fetched inside the Chrome page (same origin) only to measure it, not saved:
  • Part 01: 46,181,214 bytes, about 249 page objects, created 2003-07-17
  • Part 02: 9,881,092 bytes, about 41 page objects, created 2003-07-17
  • Part 03 (Final): 4,124,834 bytes, about 64 page objects (page counts are a count of /Type /Page objects in the file: approximate.)
  • The project folder holds FBI_files_on_Nikola_Tesla_01.pdf (133 pp.) and _02.pdf (132 pp.), both made 17 Feb 1998, i.e. an earlier FOIA release of 265 pp.

Finding

  • The Vault set (about 354 pp. by object count, 2003 scans plus a "Final" part) is larger than the 1998 copies in the folder (265 pp.). Some or all of the difference may be duplicates or different scanning; it has not been compared. Part 03 (Final) may hold material the deep reads did not see.
  • Bears on claim 6 (fate of the papers; the 1983 Wright-Patterson airtel; the FBI's role). Lead for review: compare Vault Part 03 with the folder copies.
  • Not saved to research/files: a browser download was not triggered and curl is refused by the site. Direct links: https://vault.fbi.gov/nikola-tesla/Nikola%20Tesla%20Part%2003%20%28Final%29/at_download/file (and Part 01, Part 02 the same way). The owner can save them.