diff --git a/extra/typed/authors.txt b/extra/typed/authors.txt
new file mode 100644
index 0000000000..f13c9c1e77
--- /dev/null
+++ b/extra/typed/authors.txt
@@ -0,0 +1 @@
+Joe Groff
diff --git a/extra/typed/summary.txt b/extra/typed/summary.txt
new file mode 100644
index 0000000000..43eb90a11d
--- /dev/null
+++ b/extra/typed/summary.txt
@@ -0,0 +1 @@
+Strongly-typed word definitions
diff --git a/extra/typed/typed.factor b/extra/typed/typed.factor
index f0a7946c79..b7feed874b 100644
--- a/extra/typed/typed.factor
+++ b/extra/typed/typed.factor
@@ -1,3 +1,4 @@
+! (c)Joe Groff bsd license
 USING: accessors combinators definitions effects fry hints
 kernel kernel.private parser sequences words ;
 IN: typed