Yes total circustantial evidence used. "Similar" was used as "is" and then not analyzed :).
I do not know how to find out who owned those businesses and properties in 1979 and 80.
Atlanta Child Murders
Well I still feel it is fishy but No Current FBI leaders are old enough to be involved in the investigation
Do you know how to look up who owned a property in the past, and what business was there in the past?
Without that this rabbit hole is a dead end.
I am sure they got legal court documentation to be able to use intercept in court.