diff --git a/Doc/library/2to3.rst b/Doc/library/2to3.rst
index db60a76..a959d67 100644
--- a/Doc/library/2to3.rst
+++ b/Doc/library/2to3.rst
@@ -345,6 +345,7 @@
    :synopsis: the 2to3 library
 .. moduleauthor:: Guido van Rossum
 .. moduleauthor:: Collin Winter
+.. moduleauthor:: Benjamin Peterson <benjamin@python.org>
 
 
 .. note::
diff --git a/Doc/library/difflib.rst b/Doc/library/difflib.rst
index addd813..d749e14 100644
--- a/Doc/library/difflib.rst
+++ b/Doc/library/difflib.rst
@@ -577,8 +577,15 @@
    insert a[8:8] b[8:17]
     equal a[8:29] b[17:38]
 
-See also the function :func:`get_close_matches` in this module, which shows how
-simple code building on :class:`SequenceMatcher` can be used to do useful work.
+.. seealso::
+
+   * The :func:`get_close_matches` function in this module which shows how
+     simple code building on :class:`SequenceMatcher` can be used to do useful
+     work.
+
+   * `Simple version control recipe
+     <http://code.activestate.com/recipes/576729/>`_ for a small application
+     built with :class:`SequenceMatcher`.
 
 
 .. _differ-objects:
diff --git a/Doc/library/logging.rst b/Doc/library/logging.rst
index f79b627..3e648f8 100644
--- a/Doc/library/logging.rst
+++ b/Doc/library/logging.rst
@@ -2316,6 +2316,10 @@
 locks; there is one lock to serialize access to the module's shared data, and
 each handler also creates a lock to serialize access to its underlying I/O.
 
+If you are implementing asynchronous signal handlers using the :mod:`signal`
+module, you may not be able to use logging from within such handlers. This is
+because lock implementations in the :mod:`threading` module are not always
+re-entrant, and so cannot be invoked from such signal handlers.
 
 Configuration
 -------------