We got it up. There were two layers of linoleum, a 1/4" layer of plywood, and about a gazillion nails. We've got half a gazillion more to pull out. Robert and I used the shovel, pick ax, and several pry bars to lift the plywood. The floor has that smell. It's just like the bathroom floor. Smells like feet and sweat.
Done and swept.
Tomorrow, lighting and electrical.