F. Kenneth Milne designed the original building in 1941. In 1956 Gilbert designed extensions to the offices. The City of Adelaide Heritage Survey (1986) cites the building as maintaining a high level of integrity both externally and internally.
See also Marsden, S, Sumerling, P and Stark, P (1990) Heritage of the City of Adelaide, Corporation of the City of Adelaide, Adelaide, p60.
Architects of South Australia, Copyright 2008, Updated regularly
Published by Architecture Museum, University of South Australia
http://www.architectsdatabase.unisa.edu.au