These are State River and Water Supply Commission photographs taken on October 20, 1937 during the flood, at Cora Lynn.
This shows the Cora Lynn Hall, Keast Hall. It was to have have been officially opened on June 13, 1911 however it had three feet of water through it,according to an article in The Argus of June 14, 1911 (see below). I am unsure of the official opening date. The Hall closed in the 1980s.
The Argus June 14, 1911 http://trove.nla.gov.au/newspaper
The Cora Lynn Store and the E.S.& A Bank. I am not sure when the Bank opened. There was a London Bank (later taken over by the E.S & A bank) in Garfield from 1905 and by 1908 there were Agencies at Koo-Wee-Rup, Iona and Tynong, so I suspect it was around this time. In the 1950s it was staffed about a morning a week and closed in the early 1960s. The Cora Lynn State School, No. 3502, is in the background, at the right. It opened January 1, 1907 and closed on May 29, 1951. The students and building were transferred to the Pakenham Consolidated school.