Airways Museum / Civil Aviation Historical Society
Click on history then click airports icon. RHS. Find Essendon the click on 1930 link. It shows VH-UMI with a smaller crowd.
I noticed the photo from CR NO is in the State Library of Victoria . Maybe ask Sir Raymond W Garrett when he took the pic :-)
http://trove.nla.gov.au/work/1676661...onId=182744868