I don't believe S-W ever made rye recipe bourbon, hence no Harper from there.
When Mike says Bernheim (the Astor/Belmont names are really ancient history) had not operated for "some years" my guess would be less than ten. What was then Schenley sold Ancient Age (i.e., Buffalo Trace) in something like 83. During the 80s it was mostly drawing from stocks, there being an industry-wide glut, but did fill in with some whiskey made under contract by Age and Brown-Forman (i.e., Early Times). I have it on good authority that part of the decision to build the new Bernheim was based on a desire to duplicate the whiskey they were getting from Brown-Forman.
So, figuring out where a given bottle of Harper or Charter from that period was distilled is damn near impossible and, in fact, a given bottling may well have included whiskey from several sources.
It may also be worth noting that whiskey matures rather slowly in the brick warehouses at Bernheim, to the point that Heaven Hill won't even use them. They have brandy aging in them, but no whiskey. While Heaven Hill doesn't like this now, it may have been a good thing during the glut era, preventing well-aged whiskey from becoming too woody.