diff --git a/todo.txt b/todo.txt
index e6a0f2d3..5c02d8a0 100644
--- a/todo.txt
+++ b/todo.txt
@@ -6,7 +6,9 @@ types
 
 FILE* conversions: http://aspn.activestate.com/ASPN/Mail/Message/1411366
 
-Finish shared_ptr support: http://aspn.activestate.com/ASPN/Mail/Message/c++-sig/1456023
+Finish shared_ptr support:
+http://aspn.activestate.com/ASPN/Mail/Message/c++-sig/1456023,
+http://mail.python.org/pipermail/c++-sig/2003-April/003760.html
 
 Medium Priority:
 ----------------
@@ -17,7 +19,7 @@ Implement type_info streaming for GCC
 Low Priority:
 ------------
 Write "inside the Python type system", a survey of typeobject.c in
-Python source -- may go hand-in-hand with enum wrapping
+Python source
 
 Better overload resolution - choose best match