Hynek's evaluations extracted from the Grudge incident index

88 is ringed in class 3a, 'Lack of evidence precludes explanation'.

The page sorting the early incidents into astronomical, other-explanation and unexplained classes; 88 is ringed under 'lack of evidence precludes explanation'.

National Archives microfilm T1206, digitised by the Internet Archive, 1949. Public domain

Copies 1

ScanNational Archives microfilm T1206, digitised by the Internet Archive · Public domain (US government work)1 step from the original

Where it's published

Sources 2

Location: Hackensack, New Jersey – Date: August 1947 – Incident Number: 88 (Project Blue Book case file)SRC
Unidentified Flying Objects: Project "Grudge" (Technical Report No. 102-AC-49/15-100)SRC

Cite it

Mysteries Department. (2026). Hynek's evaluations extracted from the Grudge incident index [Artifact ART0DFY6QB1GN7M]. https://mysteriesdept.com/r/ART0DFY6QB1GN7M

@misc{mysteriesdept_art0dfy6qb1gn7m,
  title     = {Hynek's evaluations extracted from the Grudge incident index},
  author    = {{Mysteries Department}},
  year      = {2026},
  note      = {Artifact, catalog key ART0DFY6QB1GN7M},
  url       = {https://mysteriesdept.com/r/ART0DFY6QB1GN7M}
}