diff --git a/notes.md b/notes.md
index 6407763ff29dbd8315d3c79fc54748ba1db80b95..5f9aa6017bef0558bd9b964f3d2290f1ff9c5f16 100644
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+++ b/notes.md
@@ -206,6 +206,8 @@ See also [Creative Commons Final Report: On the Viability and
 Development of Springing
 Licenses](https://creativecommons.org/wp-content/uploads/2018/07/Springing-licenses-FINAL.pdf).
 
+Lawrence Rosen's book *Open Source Licensing: Software Freedom and Intellectual Property Law* uses the term "eventual source".
+
 # Threads where we have posted
 
 Look in the follow-ups in these threads (and subthreads thereof) for