diff --git a/contrib/ANN/README b/contrib/ANN/README
new file mode 100644
index 0000000000000000000000000000000000000000..e55716c63660a6286159383e81eb3bfd6839226a
--- /dev/null
+++ b/contrib/ANN/README
@@ -0,0 +1,2 @@
+See the Copyright.txt and License.txt files for copyright and license
+information.
diff --git a/contrib/Chaco/README b/contrib/Chaco/README
index ec51fb0cbabe0f007e1b0ecbc04e6c0cbea5b0d5..8d1940969db1e78480b625ef2aa3a525e4b4cab4 100644
--- a/contrib/Chaco/README
+++ b/contrib/Chaco/README
@@ -4,7 +4,14 @@ This software was developed by Bruce Hendrickson and Robert Leland
 at Sandia National Laboratories under US Department of Energy
 contract DE-AC04-76DP00789 and is copyrighted by Sandia Corporation.
 
---------------------------------------------------------------------------------
+
+
+
+/* -----------------------------------------------------------------
+Gmsh - license info and modifications:
+
+Chaco is released under the GNU LGPL v2.1. 
+See http://www.sandia.gov/~bahendr/chaco.html for more info.
 
 Chaco has been slightly modified for integration into the Gmsh program.  Most
 changes are to 'main/interface.c'.  Elsewhere, the 'printf' routine has been
@@ -20,3 +27,5 @@ INTERNAL_VERTICES
 REFINE_MAP
 TERMINAL_PROPOGATION
 
+Gmsh - end 
+----------------------------------------------------------------- */
diff --git a/contrib/MathEval/README b/contrib/MathEval/README
index b66f65dc34d636075750b15e47f3ed1e4db290dc..df2d15a954d1895147854aca7f57e85ea9f20cec 100644
--- a/contrib/MathEval/README
+++ b/contrib/MathEval/README
@@ -1,7 +1,11 @@
-
 This directory contains a (heavily) modified version of GNU
 libmatheval.
 
+GNU libmatheval is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License as
+published by the Free Software Foundation; either version 2, or (at
+your option) any later version.
+
 The original libmatheval is Copyright (C) 1999, 2002, 2003 Aleksandar
 B. Samardzic
 
diff --git a/contrib/Netgen/README b/contrib/Netgen/README
index 08e5573ac221fbb85447c6465774aabbb1fe00d7..e4c737c81530711ac10a1755804fc3a22942ee80 100644
--- a/contrib/Netgen/README
+++ b/contrib/Netgen/README
@@ -1,5 +1,5 @@
 
-This directory may contain a slightly modified version of Joachim
+This directory contains a slightly modified version of Joachim
 Sch\"oberl's NETGEN mesh generator:
 
 - only the libsrc directory was kept from the original distribution
@@ -10,12 +10,7 @@ Sch\"oberl's NETGEN mesh generator:
 - the file meshing/meshtype.hpp was slightly modified so that it
   compiles with ISO-C++ complient compilers
 
-**IMPORTANT NOTICE** 
-
-NETGEN requires the boundary mesh to be oriented with exterior
-pointing normals. You HAVE TO define your geometry so that this
-criterion is fulfilled (i.e., correctly orient the geometry surfaces
-and the surface loops).
+See COPYING.LIB for license information
 
 **************************************************************