This seems to me to be the Melbourne Building, taken from the centre of Northbourne Avenue some time during the 1950s, with London Circuit to the left.
Melbourne Building, Civic Centre, under construction.
Classic photo. The streetscape looked to have more character in each of the above photos than it does now sadly.
Discovering Mildenhall’s Canberra
is a joint project between the
Museum of Australian Democracy at Old Parliament House
National Archives of Australia.