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diff --git a/README.md b/README.md
index 12b5c9f..2959bdd 100644
--- a/README.md
+++ b/README.md
@@ -9,3 +9,8 @@ Principles:
 * Widget names should try to match [Wikipedia Graphical widget]
 * It's ok to guess. Try to do something sensible.
 ```
+
+### Links
+
+- [A History of the GUI](https://arstechnica.com/features/2005/05/gui/)
+- [Go Sources](https://go.googlesource.com/go)