diff --git a/doc/source/_static/images/nsf.png b/doc/source/_static/images/nsf.png
new file mode 100644
index 0000000..998815a
Binary files /dev/null and b/doc/source/_static/images/nsf.png differ
diff --git a/doc/source/conf.py b/doc/source/conf.py
index 7d339dc..26a6073 100644
--- a/doc/source/conf.py
+++ b/doc/source/conf.py
@@ -204,7 +204,7 @@ else:
 
 # The name of an image file (relative to this directory) to place at the top
 # of the sidebar.
-#html_logo = None
+html_logo = '_static/images/nsf.png'
 
 # The name of an image file (relative to this directory) to use as a favicon of
 # the docs.  This file should be a Windows icon file (.ico) being 16x16 or 32x32
diff --git a/doc/source/index.rst b/doc/source/index.rst
index f43090a..9156d82 100644
--- a/doc/source/index.rst
+++ b/doc/source/index.rst
@@ -57,3 +57,11 @@ Indices and tables
 * :ref:`modindex`
 * :ref:`search`
 
+--------------------
+
+*The National Center for Atmospheric Research is sponsored by the National 
+Science Foundation. Any opinions, findings and conclusions or recommendations 
+expressed in this material do not necessarily reflect the views of the 
+National Science Foundation.*
+
+