Narrators And Historians

My copy of Clifford Simak's City ordered via eBay has yet to arrive by post although I have meanwhile reread the relevant story, "Desertion," on line. However, City bears another point of interest to which I will return. 

Who writes a future history series? - I mean apart from the author named on the cover. Do we imagine an historian or narrator living in a further future some time after the events recounted in the concluding instalment of the series? - someone who would be more specific than the omniscient narrator (ON) that:

is invisibly present in every third person narrative;

exists at no time or place;

expresses no opinions;

draws no attention to ON-self (there is no appropriate pronoun);

objectively recounts events, including experiences and thoughts of a viewpoint character;

is not to be identified with any character, not even with a hypothetical future historian whose name and other details remain unknown.

Such a historian would have a name, personal characteristics and opinions even if we never found out what they were whereas ON is an omnipresent, completely transparent, fictional device usually unnoticed because the reader's attention is entirely focused on what ON recounts.

So, apart from ON, is there a historical, spatiotemporally specific, narrator of a future history? Sometimes. yes. Sometimes, not. Sandra Miesel provides such a historian for Poul Anderson's Psychotechnic History. Hloch of Stormgate Choth compiles and edits The Earth Book Of Stormgate but not the rest of Anderson's Technic History. But there are other historians in that series.

Philip Raven dreams Wells' The Shape Of Things To Come. One of the Last Men telepathically communicates Last And First Men to Olaf Stapledon although Stapledon thinks that he is writing speculative fiction.

The stories in City have individual introductions that bind them together and are written as from a later perspective which it will be interesting to reread so that is all for now, folks.