diff --git a/archive.md b/archive.md
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--- a/archive.md
+++ b/archive.md
@@ -15,6 +15,7 @@ Sofern vorhanden werden wir hier Folien, Links und weiteres Material über verga
 
 * Autor: Jonathan Müller
   [<img alt="GitHub" height="16px" src="images/GitHub-light.png">](https://github.com/foonathan/)
+* Folien: [PDF](archive/2025-09-03/MissingRanges.pdf)
 
 ## 2025-06-04
 
diff --git a/archive/2025-09-03/MissingRanges.pdf b/archive/2025-09-03/MissingRanges.pdf
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index 0000000..19fb14c
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