diff --git a/index.html b/index.html
index dad50fc..06b97bd 100644
--- a/index.html
+++ b/index.html
@@ -5,9 +5,18 @@
 		<title>FourD</title>
 		<style>
 			body { margin: 0; }
+			div#info {
+				position: fixed;
+				bottom:0;
+				right: 0;
+				z-index: 2;
+				border:0.5em;
+				font-family: sans-serif }
 		</style>
 	</head>
 	<body>
 		<script type="module" src="/main.js"></script>
+		<div id="info">by <a target="_blank" href="https://mikelynch.org/">Mike Lynch</a> -
+			<a target="_blank" href="https://github.com/spikelynch/fourdjs">source</a></div>
 	</body>
 </html>
\ No newline at end of file
