diff --git a/src/part/cone.scad b/src/part/cone.scad
index 79634ea3..e47fdac6 100644
--- a/src/part/cone.scad
+++ b/src/part/cone.scad
@@ -1,3 +1,13 @@
+/**
+* cone.scad
+*
+* @copyright Justin Lin, 2019
+* @license https://opensource.org/licenses/lgpl-3.0.html
+*
+* @see https://openhome.cc/eGossip/OpenSCAD/lib2-cone.html
+*
+**/ 
+
 module cone(radius, length = 0, spacing = 0.5, angle = 50, void = false, ends = false) {
     module base(r) {
         rotate_extrude() {
diff --git a/src/part/connector_peg.scad b/src/part/connector_peg.scad
index 8265fdad..15a1a5c8 100644
--- a/src/part/connector_peg.scad
+++ b/src/part/connector_peg.scad
@@ -1,3 +1,13 @@
+/**
+* connector_peg.scad
+*
+* @copyright Justin Lin, 2019
+* @license https://opensource.org/licenses/lgpl-3.0.html
+*
+* @see https://openhome.cc/eGossip/OpenSCAD/lib2-connector_peg.html
+*
+**/ 
+
 module connector_peg(radius, height, spacing = 0.5, void = false, ends = false) {
     lip_r = radius * 1.2;
     r_diff = lip_r - radius;