Jim, that's quite a collection... It would be neat to catalog the inventory to its perspective building. Have you done so? I know, we have lives, too, right? (wait a minute. this is our life!)

Sussexoak--

That's just what I'd been wondering about... "nailing" things on w/ treenails/pegs. It makes perfect sense that this was done. Can you get a picture sometime?
Boards/ sheathing must have been affixed this way, too.

How odd that they are square pegs! ...eaiser to produce, perhaps. Does this mean they went through a round hole?