diff --git a/lib/node/index.d.ts b/lib/node/index.d.ts
index be64d0e..601efff 100644
--- a/lib/node/index.d.ts
+++ b/lib/node/index.d.ts
@@ -1 +1,10 @@
+/**
+ * @module graph
+ *
+ * A small library of graph algorithms.
+ *
+ * @copyright (c) 2017 David Mesquita-Morris
+ *
+ * Licensed under the MIT and GPL v3 licences
+ */
 export { Tree } from "./tree";
diff --git a/lib/node/index.js b/lib/node/index.js
index fb1d705..366bbfd 100644
--- a/lib/node/index.js
+++ b/lib/node/index.js
@@ -1,4 +1,14 @@
 "use strict";
+/**
+ * @module graph
+ *
+ * A small library of graph algorithms.
+ *
+ * @copyright (c) 2017 David Mesquita-Morris
+ *
+ * Licensed under the MIT and GPL v3 licences
+ */
 Object.defineProperty(exports, "__esModule", { value: true });
+// pull in the tree algorithms
 var tree_1 = require("./tree");
 exports.Tree = tree_1.Tree;
diff --git a/package.json b/package.json
index bd035e4..4c2eb4f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@steelbreeze/graph",
-  "version": "1.0.1",
+  "version": "1.0.2",
   "description": "Graph libraries for TypeScript and JavaScript",
   "main": "./lib/node/index.js",
   "typings": "./lib/node/index.d.ts",
diff --git a/src/index.ts b/src/index.ts
index cb2dd31..134bbf0 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1 +1,12 @@
+/**
+ * @module graph
+ * 
+ * A small library of graph algorithms.
+ * 
+ * @copyright (c) 2017 David Mesquita-Morris
+ * 
+ * Licensed under the MIT and GPL v3 licences
+ */
+
+// pull in the tree algorithms
 export { Tree } from "./tree";
\ No newline at end of file
diff --git a/test/tree.js b/test/tree.js
index 60da496..a7cf174 100644
--- a/test/tree.js
+++ b/test/tree.js
@@ -29,12 +29,12 @@ describe("test/tree.js", function () {
 	});
 
 	it("Common ancestor", function () {
-//		assert.equal(root, tree.lowestCommonAncestor(root, root));
-//		assert.equal(root, tree.lowestCommonAncestor(root, left));
-//		assert.equal(root, tree.lowestCommonAncestor(root, right));
-//		assert.equal(root, tree.lowestCommonAncestor(root, rightLeft));
-//		assert.equal(root, tree.lowestCommonAncestor(root, rightRight));
-//		assert.equal(undefined, tree.lowestCommonAncestor(root, other));
+		assert.equal(0, graph.Tree.lowestCommonAncestorIndex(graph.Tree.ancestors(root), graph.Tree.ancestors(root)));
+		assert.equal(0, graph.Tree.lowestCommonAncestorIndex(graph.Tree.ancestors(root), graph.Tree.ancestors(left)));
+		assert.equal(0, graph.Tree.lowestCommonAncestorIndex(graph.Tree.ancestors(root), graph.Tree.ancestors(right)));
+		assert.equal(0, graph.Tree.lowestCommonAncestorIndex(graph.Tree.ancestors(root), graph.Tree.ancestors(rightLeft)));
+		assert.equal(0, graph.Tree.lowestCommonAncestorIndex(graph.Tree.ancestors(root), graph.Tree.ancestors(rightRight)));
+		assert.equal(-1, graph.Tree.lowestCommonAncestorIndex(graph.Tree.ancestors(root), graph.Tree.ancestors(other)));
 
 		assert.equal(0, graph.Tree.lowestCommonAncestorIndex(graph.Tree.ancestors(left), graph.Tree.ancestors(root)));
 		assert.equal(1, graph.Tree.lowestCommonAncestorIndex(graph.Tree.ancestors(left), graph.Tree.ancestors(left)));
@@ -57,12 +57,12 @@ describe("test/tree.js", function () {
 		assert.equal(1, graph.Tree.lowestCommonAncestorIndex(graph.Tree.ancestors(rightLeft), graph.Tree.ancestors(rightRight)));
 		assert.equal(-1, graph.Tree.lowestCommonAncestorIndex(graph.Tree.ancestors(rightLeft), graph.Tree.ancestors(other)));
 
-//		assert.equal(root, tree.lowestCommonAncestor(rightRight, root));
-//		assert.equal(root, tree.lowestCommonAncestor(rightRight, left));
-//		assert.equal(right, tree.lowestCommonAncestor(rightRight, right));
-//		assert.equal(right, tree.lowestCommonAncestor(rightRight, rightLeft));
-//		assert.equal(rightRight, tree.lowestCommonAncestor(rightRight, rightRight));
-//		assert.equal(undefined, tree.lowestCommonAncestor(rightRight, other));
+		assert.equal(0, graph.Tree.lowestCommonAncestorIndex(graph.Tree.ancestors(rightRight), graph.Tree.ancestors(root)));
+		assert.equal(0, graph.Tree.lowestCommonAncestorIndex(graph.Tree.ancestors(rightRight), graph.Tree.ancestors(left)));
+		assert.equal(1, graph.Tree.lowestCommonAncestorIndex(graph.Tree.ancestors(rightRight), graph.Tree.ancestors(right)));
+		assert.equal(1, graph.Tree.lowestCommonAncestorIndex(graph.Tree.ancestors(rightRight), graph.Tree.ancestors(rightLeft)));
+		assert.equal(2, graph.Tree.lowestCommonAncestorIndex(graph.Tree.ancestors(rightRight), graph.Tree.ancestors(rightRight)));
+		assert.equal(-1, graph.Tree.lowestCommonAncestorIndex(graph.Tree.ancestors(rightRight), graph.Tree.ancestors(other)));
 
 		assert.equal(-1, graph.Tree.lowestCommonAncestorIndex(graph.Tree.ancestors(other), graph.Tree.ancestors(root)));
 		assert.equal(-1, graph.Tree.lowestCommonAncestorIndex(graph.Tree.ancestors(other), graph.Tree.ancestors(left)));