# The Smithsonian sealed the relevant files for fifty years at Sanborn's request.

> The Smithsonian sealed the relevant files for fifty years at Sanborn's request.

Source: https://mysteriesdept.com/mysteries/kryptos/evidence/EVD0D7HTAQW07XX/the-smithsonian-sealed-the-relevant-files-for-fifty-years-at  
Publisher: Mysteries Department  
Licence: CC BY 4.0 (credit Mysteries Department and link the page)  

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[Kryptos](https://mysteriesdept.com/mysteries/kryptos)Evidence

Evidence · Kryptos

# The Smithsonian sealed the relevant files for fifty years at Sanborn's request.

The Smithsonian sealed the relevant files for fifty years at Sanborn's request.

Supported0

## What it bears on 1 answer

[K4's plaintext and method are known to a few holders and deliberately unpublished.](https://mysteriesdept.com/mysteries/kryptos/answers/ANS0D7HT9RM4MAQ/k4s-plaintext-and-method-are-known-to-a-few-holders-and)

Most likely

FOR

## Cite it

```
Mysteries Department. (2026). The Smithsonian sealed the relevant files for fifty years at Sanborn's request. [Evidence EVD0D7HTAQW07XX]. https://mysteriesdept.com/r/EVD0D7HTAQW07XX
```

Key

**EVD** 0D7HTAQW07XX

Kind

Evidence

Tier

Supported

Version

1

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