diff --git a/share/misc/bsd-family-tree b/share/misc/bsd-family-tree
index 58684f71651e..30aa25fe45fb 100644
--- a/share/misc/bsd-family-tree
+++ b/share/misc/bsd-family-tree
@@ -477,6 +477,7 @@ Ninth   Edition         1986-09-xx [QCU]
 Tenth   Edition         1989-10-xx [QCU]
 
 1BSD                    late 1977
+			1978-01-16 [DOC]
 			1978-03-09 [QCU]
 				PDP-11, Pascal, ex(1)
 				30 free copies of 1BSD sent out