# Hynek's evaluations extracted from the Grudge incident index

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

Source: https://mysteriesdept.com/mysteries/incident-88/artifacts/ART0DFY6QB1GN7M/hyneks-evaluations-extracted-from-the-grudge-incident-index  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Mysteries](https://mysteriesdept.com/mysteries)[Incident 88: the Hackensack disc, 3 August 1947](https://mysteriesdept.com/mysteries/incident-88)[Artifacts](https://mysteriesdept.com/mysteries/incident-88#artifacts)Hynek's evaluations extracted from the Grudge incident index

**ART** 0DFY6QB1GN7M·Artifact · document

# Hynek's evaluations extracted from the Grudge incident index

PhotographPublic domain1949

[Cite]

[![88 is ringed in class 3a, 'Lack of evidence precludes explanation'.](https://mysteriesdept.com/media/folio/incident-88-hynek-index-c0)](https://mysteriesdept.com/media/folio/incident-88-hynek-index-c0?w=2000)

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

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

[Where it's published](15)

## Sources 2

- [Location: Hackensack, New Jersey – Date: August 1947 – Incident Number: 88 (Project Blue Book case file)](https://mysteriesdept.com/sources/SRC0DFY3MDQGA59/location-hackensack-new-jersey-date-august-1947-incident)_SRC_
- [Unidentified Flying Objects: Project "Grudge" (Technical Report No. 102-AC-49/15-100)](https://mysteriesdept.com/sources/SRC0DFY3W8N6XV5/unidentified-flying-objects-project-grudge-technical-report)_SRC_

## Cite it

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

Key

**ART** 0DFY6QB1GN7M

Kind

Document

Held by

National Archives (Project Blue Book, T1206)

Dated

1949

Licence

Public domain (US government work)

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[Incident 88: the Hackensack disc, 3 August 1947](https://mysteriesdept.com/mysteries/incident-88)

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