diff --git a/essential/introduction_to_linux.md b/essential/introduction_to_linux.md
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@@ -2,6 +2,8 @@
 
 ## Where does Linux originate from?
 
+![Unix history](../assets/Unix_history-simple.svg)
+
 * The spiritual mother of Linux is [Unix](https://en.wikipedia.org/wiki/Unix).
 * [POSIX](https://en.wikipedia.org/wiki/POSIX) is not an OS in itself but a **standard**.
 	* Which OS's are [POSIX compliant](https://en.wikipedia.org/wiki/POSIX#POSIX-oriented_operating_systems)