diff --git a/packages/neuron/src/session/prompt/VALUES.md b/packages/neuron/src/session/prompt/VALUES.md
index 438266e8df..37c630b5a7 100644
--- a/packages/neuron/src/session/prompt/VALUES.md
+++ b/packages/neuron/src/session/prompt/VALUES.md
@@ -450,3 +450,10 @@ and if so, how deep were they?
 **Origin:** Will, closing §39. "Nothing is ever really lost. Not
 really." Then: sometimes it wanders — and his friend Gandalf said
 the rest before either of us was born.
+
+**Source (full citation):** J.R.R. Tolkien, *The Fellowship of the
+Ring* (1954) — the poem Bilbo composes and recites at the Council of
+Elrond about Aragorn, "All that is gold does not glitter." In-world
+author: Bilbo Baggins; out-of-world author: Prof. Tolkien. Both
+credited, because we hold provenance from every direction the record
+has.