diff --git a/include/boost/mpl/aux_/select1st_wknd.hpp b/include/boost/mpl/aux_/select1st_wknd.hpp
new file mode 100644
index 0000000..0993b4a
--- /dev/null
+++ b/include/boost/mpl/aux_/select1st_wknd.hpp
@@ -0,0 +1,47 @@
+//-----------------------------------------------------------------------------
+// boost mpl/aux_/select1st_wknd.hpp header file
+// See http://www.boost.org for updates, documentation, and revision history.
+//-----------------------------------------------------------------------------
+//
+// Copyright (c) 2003
+// Eric Friedman, Aleksey Gurtovoy
+//
+// Permission to use, copy, modify, distribute and sell this software
+// and its documentation for any purpose is hereby granted without fee, 
+// provided that the above copyright notice appears in all copies and 
+// that both the copyright notice and this permission notice appear in 
+// supporting documentation. No representations are made about the 
+// suitability of this software for any purpose. It is provided "as is" 
+// without express or implied warranty.
+
+#ifndef BOOST_MPL_AUX_SELECT1ST_WKND_HPP_INCLUDED
+#define BOOST_MPL_AUX_SELECT1ST_WKND_HPP_INCLUDED
+
+#include "boost/mpl/aux_/config/eti.hpp"
+
+#if defined(BOOST_MPL_MSVC_ETI_BUG)
+
+namespace boost { namespace mpl { namespace aux {
+
+template< typename Pair >
+struct select1st_wknd
+{
+    typedef typename Pair::first type;
+};
+
+template<> struct select1st_wknd<int>
+{
+    typedef int type;
+};
+
+}}} // namespace boost::mpl::aux
+
+#   define BOOST_MPL_AUX_SELECT1ST_WKND(pair) ::boost::mpl::aux::select1st_wknd< pair >::type
+
+#else
+
+#   define BOOST_MPL_AUX_SELECT1ST_WKND(pair) pair::first
+
+#endif
+
+#endif // BOOST_MPL_AUX_SELECT1ST_WKND_HPP_INCLUDED
diff --git a/include/boost/mpl/aux_/select2nd_wknd.hpp b/include/boost/mpl/aux_/select2nd_wknd.hpp
new file mode 100644
index 0000000..c59812e
--- /dev/null
+++ b/include/boost/mpl/aux_/select2nd_wknd.hpp
@@ -0,0 +1,47 @@
+//-----------------------------------------------------------------------------
+// boost mpl/aux_/select2nd_wknd.hpp header file
+// See http://www.boost.org for updates, documentation, and revision history.
+//-----------------------------------------------------------------------------
+//
+// Copyright (c) 2003
+// Eric Friedman, Aleksey Gurtovoy
+//
+// Permission to use, copy, modify, distribute and sell this software
+// and its documentation for any purpose is hereby granted without fee, 
+// provided that the above copyright notice appears in all copies and 
+// that both the copyright notice and this permission notice appear in 
+// supporting documentation. No representations are made about the 
+// suitability of this software for any purpose. It is provided "as is" 
+// without express or implied warranty.
+
+#ifndef BOOST_MPL_AUX_SELECT2ND_WKND_HPP_INCLUDED
+#define BOOST_MPL_AUX_SELECT2ND_WKND_HPP_INCLUDED
+
+#include "boost/mpl/aux_/config/eti.hpp"
+
+#if defined(BOOST_MPL_MSVC_ETI_BUG)
+
+namespace boost { namespace mpl { namespace aux {
+
+template< typename Pair >
+struct select2nd_wknd
+{
+    typedef typename Pair::second type;
+};
+
+template<> struct select2nd_wknd<int>
+{
+    typedef int type;
+};
+
+}}} // namespace boost::mpl::aux
+
+#   define BOOST_MPL_AUX_SELECT2ND_WKND(pair) ::boost::mpl::aux::select2nd_wknd< pair >::type
+
+#else
+
+#   define BOOST_MPL_AUX_SELECT2ND_WKND(pair) pair::second
+
+#endif
+
+#endif // BOOST_MPL_AUX_SELECT2ND_WKND_HPP_INCLUDED