I have a large amount (~1000ft2) of old pine flooring salvaged during a brownstone renovation. It has been denailed and stored in a dry area to prevent warping. The condition is variable - tongue and groove is mostly intact. Variable lengths but lots of long pieces. Width is about 3 1/2 inches with decent thickness to make resanding fine. You would some skill and patience to re-use this but done properly, would make a really nice vintage floor. Sanded, the wood is a natural yellow red color but can be easily stained. Email with interest and I will send some pictures of sample planks.