You're welcome, Kat. Bill Pavao is of the belief that the built-in in Lizzie's room and in the sitting room were after she lived there. Also that there was no door on the closet in Lizzie's room, hence the curtain to hide her toilet things. He was on intimate terms with the Borden house, so, I don't know if this is from him knowing from investigation or from the same sources we have? Wish he was still here to ask.
One thing I thought of was has anyone checked the built-in in Lizzie's room at all? Pulled out the drawers and looked at them? Do they look handmade or machine made? I did a search and came up with some info that may apply:
Benchmade - This quaint term refers to an interim step between handmade and machine-made. In the few small craft shops that still exist, reproductions are made the way they have been made for nearly 100 years. Modern machinery is used for the heavy work, but most of the precision work, including carving, is still done by hand. Each joint is individually cut and assembled manually to ensure a tight fit; each panel is hand sanded and the finish is hand rubbed. In addition to staying true to the original design as much as is possible, each piece is made on a craftsman's bench rather than on an assembly line. The quality in most benchmade pieces, whether made in 1910 or 1999, is evident.
Construction - How a piece is made is often the clearest indicator of its age since the technology of any period usually leaves tangible clues, but the clues can be tricky. The difference between handmade dovetail joints and machine-made joints is almost always the first clue to look for, if the piece has drawers. Because the gang router that makes machine joints was not in general use until the 1890s, machine joints are a pretty good indication of 20th-century work. It couldn't have been much before. But do handmade joints mean antiquity? Not necessarily
If a drawer has a perfectly smooth bottom, both top and under side, and all drawer sides are the same, then it probably is not handmade but rather has been planed and sanded by machine or perhaps even made of plywood. The same applies to side panels and tops. Bear in mind the concept of "workman-like manner." In the days of hand production, if a piece of wood was not seen or did not have to be smooth, it was not. Nor was it stained and finished. The pieces were only as good as they had to be.
From this site:
http://www.antiqueweek.com/stories/tmfe ... ture72.htm
Then there is the hardware on the cabinet doors and the drawer pulls, are they the original hardware to the built-in? That would be something to check on also. Weren't old drawer pulls bolted on the back instead of being screwed on? I guess you would need someone who was an antiques wiz to figure it out, but, just an idea.