The South Eastern Historical Association (SEHA) was established in 1965 and covers the south east suburbs of Melbourne, the Mornington Peninsula, the Bass Valley, Koo-Wee-Rup Swamp, Wonthaggi and Phillip Island.
Or, the municipalities of the City of Kingston, City of Greater Dandenong, City of Casey, City of Frankston, Mornington Peninsula Shire, Cardinia Shire and Bass Coast Shire.
Delegates from each group meet quarterly at various locations.