2009 Surgeon John Harris and Experiment Farm Cottage 1805 View of Parramatta from in front of Government House looking down George Street to the Government Wharf. ArchitecturalSocial HistoryBiographicalColonialArchaeologicalSydney - WesternPublications (Books) Clients: Mrs Caroline Simpson and Mr James Fairfax AO Author: Sue Rosen The ten year plus investigation of the origins of Experiment Farm Cottage and the life of Surgeon John Harris of the infamous NSW Corps led to the publication of Australia's Oldest House in 2009.