Hello again;  My recent post should have mentioned the tracking of old
neighbors and/or businesses through the years by using the "Street Index"
feature from the old R.H. Polk City Directories that were published (at
least, in the United States) from the early 1900s until the late 1980s.

You can go back to a given year and the street index will list everything
as it was.  A search by name is also provided.  A name, address, telephone
number, and occupation was normally listed.

Glenn Morris
Portland, Oregon