diff --git a/README.md b/README.md
index 5040ba2..f56caf7 100644
--- a/README.md
+++ b/README.md
@@ -23,6 +23,10 @@ Want to create your presentation using a visual editor? Try the official reveal.
 
 ## License
 
-MIT licensed
+
+REACT.js components are MIT licensed
 
 Copyright (C) 2011-2021 Hakim El Hattab, https://hakim.se
+
+slide content in index.html is CC-BY-NC-SA 4.0 https://creativecommons.org/licenses/by-nc-sa/4.0/
+Copyright (C) 2021 Paul Warren
diff --git a/index.html b/index.html
index 49b1f07..2d76477 100644
--- a/index.html
+++ b/index.html
@@ -9,7 +9,23 @@
     <link rel="stylesheet" href="dist/reset.css">
     <link rel="stylesheet" href="dist/reveal.css">
     <link rel="stylesheet" href="dist/theme/solarized.css">
-    
+
+    <style type="text/css">
+      /* Copyright notice */
+      #copyright {
+	  position: absolute;
+	  bottom: 0%;
+	  left: 0%;
+	  text-size: tiny;
+      }
+      .reveal .footer {
+	  position: absolute;
+	  bottom: 1em;
+	  left: 1em;
+	  font-size: 0.5em;
+      }
+    </style>
+		  
     <!-- Theme used for syntax highlighted code -->
     <link rel="stylesheet" href="plugin/highlight/monokai.css">
   </head>
@@ -21,6 +37,8 @@
 	  <p><b>Paul Warren</b></p>
 	  <p>Mastodon: @pwarren@mastodon.thewarrens.name </p>
 	  <p>email: paul at thewarrens.name </p>
+	  <p>&copy; 2021 Paul Warren</p>
+	  <p>CC BY-NC-SA<p>
 	</section>
 
 	<section><h2 style="color:red">! WARNING !</h2>