A bunch more wall pulled down. I now have the baseboard removed from most of the room I'm working in, and from all of the external wall. I've still got a small section I need to pull down so I can get behind it (which could be fun, because there's a shelving unit in front of it and I'm not sure where to move it to). It's remarkable just how much cement and general crud there was behind the wall. I'm also going to need to reinforce the floor of all things - where the house was extended the basement was extended underneath it and the joists to support the floor aren't strong enough. They support the floor but I can feel a difference in support when I walk across the dividing line. So I'm going to get a honking great beam, cut it to length and brace the inadequate joist sections.
Along the way I filled up another three bags of rubble and stuff. I got another window frame stripped. This window ledge was cracked so I'm going to have to replace it. Some knucklehead nailed it to the window trim so I managed to put a modest split in that while trying to remove it. Replacing that part of the window trim is impractical so I'll glue and screw it, and hope it doesn't show too much.
I also got another power receptacle disconnected, removed from the baseboard and reconnected as a temporary measure. The longer term plan is to rejig the sockets completely - I've got weird crossovers where sockets in one room are on the same circuit as sockets in a different room, while other sockets in the same room were on different circuits. My plan is to rationalise it all. Now I've got the walls stripped back to studs I can get at the holes drilled in the floor to feed cables, which means I've got a sporting chance of getting it all done. That's never a bad thing....