There is a woman in Marshfield, MA who is selling a farm. She is willing to let people come and "harvest" the boards in her barns rather than see them go to a landfill. She said most were milled on the property years and years ago. You can negotiate a price with her.

I did buy a bunch of rough cut 2" x 5" planks for a fencing project. I have no relationship with her and have no interest in this aside from not wanting this to go to waste. This farm was an inheritance that she can't maintain, so there was no sentimental baggage. She also has a some farm / barn accessories she would like to sell, including some awesome stall doors on tracks which unfortunately I have absolutely no use for.

Anyone interested can PM for contact info or search her out via Criagslist.