diff --git a/include/boost/concept_archetype.hpp b/include/boost/concept_archetype.hpp
index f84d8c7..3bf72e4 100644
--- a/include/boost/concept_archetype.hpp
+++ b/include/boost/concept_archetype.hpp
@@ -10,6 +10,8 @@
 //   17 July  2001: Added const to some member functions. (Jeremy Siek) 
 //   05 May   2001: Removed static dummy_cons object. (Jeremy Siek)
 
+// See http://www.boost.org/libs/concept_check for documentation.
+
 #ifndef BOOST_CONCEPT_ARCHETYPES_HPP
 #define BOOST_CONCEPT_ARCHETYPES_HPP
 
diff --git a/include/boost/concept_check.hpp b/include/boost/concept_check.hpp
index b5bdbe4..146ffd9 100644
--- a/include/boost/concept_check.hpp
+++ b/include/boost/concept_check.hpp
@@ -10,6 +10,9 @@
 //   02 April 2001: Removed limits header altogether. (Jeremy Siek)
 //   01 April 2001: Modified to use new <boost/limits.hpp> header. (JMaddock)
 //
+
+// See http://www.boost.org/libs/concept_check for documentation.
+
 #ifndef BOOST_CONCEPT_CHECKS_HPP
 #define BOOST_CONCEPT_CHECKS_HPP