diff --git a/ct/headers/shelfmark b/ct/headers/shelfmark
new file mode 100644
index 000000000..2c2791fde
--- /dev/null
+++ b/ct/headers/shelfmark
@@ -0,0 +1,6 @@
+         __         ______                     __  
+   _____/ /_  ___  / / __/___ ___  ____ ______/ /__
+  / ___/ __ \/ _ \/ / /_/ __ `__ \/ __ `/ ___/ //_/
+ (__  ) / / /  __/ / __/ / / / / / /_/ / /  / ,<   
+/____/_/ /_/\___/_/_/ /_/ /_/ /_/\__,_/_/  /_/|_|  
+