A rectangular spiral staircase?

Hell that looks VERY similar to the one in the house I grew up in--which my Gramps and my Dad built, when he was still in high school, just before WWII I'll see if I can find a photo. It was the subject of a really sad sale by the hands of "the person formerly known as my sister" if that gives you a clue

This is after the house sold and under a pretty complete renovation. Notice the ceiling joists those are 2x TEN. This is taken from the main bedroom. The thing originally had a tiny, almost square "hallway" and you would come in from the door frame at the right of the photo from the living room. So the "hallway" had 4 openings, the living room, the stairs, the bath (straight ahead from living room) and the bedroom towards the camera

There is no plywood, "packi board" or OSB in this house. Floor joists and roof rafters were "rough" "real" dimension 2x, and just as sound today as in 38 when work was started. Sheeting and subfloor is tongue and groove 1x xx board

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