diff --git a/roles/usb_lib/tasks/install.yml b/roles/usb_lib/tasks/install.yml
index d9543026e..915128f2b 100644
--- a/roles/usb_lib/tasks/install.yml
+++ b/roles/usb_lib/tasks/install.yml
@@ -1,3 +1,9 @@
+# Official usbmount 0.0.22 (2011-08-08) documentation:
+# https://github.com/rbrito/usbmount/releases
+# https://github.com/hfuchs/usbmount/blob/master/README (2010-08-11)
+# https://github.com/rbrito/usbmount/blob/master/README.md (2018-08-10)
+# https://github.com/rbrito/usbmount/blob/master/usbmount.conf (2010-04-25)
+
 - name: Does systemd-udevd.service exist
   stat:
     path: "{{ systemd_location }}/systemd-udevd.service"