There have been a couple interesting threads on the Society of American Period Furniture Makers (SAPFM) forum I’d like to make you aware of in case you missed them:
On drawer construction:
I think construction details and their variation is particularly interesting. You can easily see how and why our woodworking ancestors changed the style of their furniture to accommodate changing consumer expectations. But the way they made drawers is really different. Different regions built their structures differently. Was this based on tools or technologies? Material availability? I have my theories.
What we do know is that certain regions showed remarkable similarity in construction. So regional differences (or differences in general) can’t be easily dismissed as personal preference. There’s certainly more to it than that.