Before there were telephones, large cities had City Directories, which did more or less the same thing.
I don’t know of any real skill in managing telephone directories, except, perhaps, the knowledge that, at least in the US, telephone directories, unlike all other sorts of alphabetical listing, put space /after/ Z in the alphabet.
Before there were telephones, large cities had City Directories, which did more or less the same thing.
I don’t know of any real skill in managing telephone directories, except, perhaps, the knowledge that, at least in the US, telephone directories, unlike all other sorts of alphabetical listing, put space /after/ Z in the alphabet.