Index (publishing)
Indexing as we know it today had to grow over a long time of history. It depended on the invention of the alphabet. It depended on the invention of the book (or codex, at first). And, as we have it today, it depended on the invention of the printed book. Gutenberg's printing press of around 1440 made this possible. The first printed index is found in St. Augustine's De arte praedicandi. This book was made in the early 1460s in Mainz, Germany by the printers of the Gutenberg bible.