Hello, I didn't follow all this closely so maybe someone else has answered better than me already? I can see you thinking the "New" Lumber Yard (in 1821) may not be the older well known Lumber Yard in George Street. That maybe it was at Emu Plains, Parramatta, Liverpool, but no one seems to know? I only know of the mentions in Geoffrey Scott's "Sydney Highways of History" and a few other mentions. That indicates that the early Timber Yard and Lumber Yard were both in George Street. (They Lumber Yard was at/near George at Bridge as you probably have gotten a lot on already). The main early stoneyard was said to be "across from the Lumber Yard" too. The "Lumber Yard" over time becomes like a sort of institution or department name I think, responsible for the work of over 2000 men in all. It's a bit like a 'Department of Timber and Timber Products' .. originally based on big lumber cutting pits but growing topsy turvy with extra add-on functions/undertakings I think ... carpenters, cabinet makers, wood turners if they had lathes at that time, shingle makers and even the government gardeners may have been early controlled out of this place or administration. I think in 1804 what later became "Lumber Yard" was just called the convict workshop. The convicts did not live at the Lumber Yard. They were marched there each morning at 5 a.m. to get ready for work. Note that it was in or about 1821 that the Dockyard was expanded to south of the Commisariat. The Lumber Yard then occupied three acres running down to the Tank Stream at around the current intersection of Bridge and George Streets. This area apparently had a brick wall around it and was employing over 2000 men by 1821. Hence it was the ?main government enterpise going at the time. The upper reaches of the Lane Cove River is where much of the tree felling went on, to move the wood by water to Sydney Cove for cutting up by large pit saws into timber .. which was then stacked at the Timber Yard further along George Street. Whether any of the sites closer to where the trees were felled were also called government lumber yards I have no idea. Maybe there was some "New" lumber yard started somewhere else around 1821? Or maybe that is when they refurbished/enlarged/re-organised the Sydney Cove one? But why not ask the Forestry Department .. lumbering is forestry related business and they should know all this history. As consequence of the latest round of downsizing/amalgamating of government departments, Forestry is now in Primary Industry department. Their head office is at Beecroft. See http://www.dpi.nsw.gov.au/forests Or write to cumberland@sf.nsw.gov.au for any forestry related matters. Cheers, John