Our house in Boston was built in the 1730's.

Of course, much has been upgraded since then and we'd like to try to "date" the various attributes of the house, such as moldings, floors, etc.

Also, we're curious about taking a path backwards, towards the original content.

Case in point ... window sash locks. What did they use in the 1700's? Iron? Shape? Source for antiques or repros?

If anyone could point us in the right direction, it would be great.