diff --git a/src/tiledimage.js b/src/tiledimage.js
index cc2c32d3..6fb68413 100644
--- a/src/tiledimage.js
+++ b/src/tiledimage.js
@@ -85,7 +85,11 @@
  */
 $.TiledImage = function( options ) {
     var _this = this;
-
+    /**
+     * The {@link OpenSeadragon.TileSource} that defines this TiledImage.
+     * @member {OpenSeadragon.TileSource} source
+     * @memberof OpenSeadragon.TiledImage#
+     */
     $.console.assert( options.tileCache, "[TiledImage] options.tileCache is required" );
     $.console.assert( options.drawer, "[TiledImage] options.drawer is required" );
     $.console.assert( options.viewer, "[TiledImage] options.viewer is required" );