while searching for information on Soderlund family I found your request re Soderlunds of Australia.
If you would care to email me I can supply information re our family, which for many years used the spelling "Soderland". I suspect you are from Coffs Harbour? I know that I met a Soderlund who worked at the Coffs Harbour RSL some years back when my Mother was alive & living at Nina Close.
Are you related to the Soderlund/Soderland family that came from Glebe? If so, I can also supply information dating back prior to 1900 on this connection.