I have just read a book called Index: a history of by Dennis Duncan (sorry about the changes in font: I have copied bits from various other sites - the first one is from me on a Reading message board. It was rather esoteric for my understanding and the literary feuds were quite convoluted.
Index is a very modern book and being non-fiction it shows more. One paragraph (or part thereof) says, ' When Donald Trump tweets that 'Google & others are suppressing voices of Conservatives...[sic] They are controlling what we can & cannot see", he is only - inadvertently - dragging an ancient paranoia into the digital age, the twenty-first-century Republican version of Macauley's "Let no damned Tory index my History." The search engine, it should be noted, was soon exonerated. But as we move into the present, tracking the entry of computing into the practice of indexing, it seems that a complex of old doubts - about reading and attention, effort and convenience, direct and mediated experience - are closer to the surface now that they have been for centuries.
From the Penguin site: Most of us give little thought to the back of the book - it's just where you go to look things up. But here, hiding in plain sight, is an unlikely realm of ambition and obsession, sparring and politicking, pleasure and play. Here we might find Butchers, to be avoided, or Cows that sh-te Fire, or even catch Calvin in his chamber with a Nonne. This is the secret world of the index: an unsung but extraordinary everyday tool, with an illustrious but little-known past. Here, for the first time, its story is told.
Charting its curious path from the monasteries and universities of thirteenth-century Europe to Silicon Valley in the twenty-first, Dennis Duncan reveals how the index has saved heretics from the stake, kept politicians from high office and made us all into the readers we are today. We follow it through German print shops and Enlightenment coffee houses, novelists' living rooms and university laboratories, encountering emperors and popes, philosophers and prime ministers, poets, librarians and - of course - indexers along the way. Revealing its vast role in our evolving literary and intellectual culture, Duncan shows that, for all our anxieties about the Age of Search, we are all index-rakers at heart, and we have been for eight hundred years.