found on http://mentallydefectiveandborntoolate.tumblr.com
update Jan 6th, I just found another Vietnam helo with nose art: http://justacarguy.blogspot.com/2013/04/1967-airfield-in-vietnam-lots-of-helos.html
Update Aug 2016 I found another http://justacarguy.blogspot.com/2016/08/finally-i-found-2nd-huey-with-nose-art.html