Chronological means, verbatim, "(<span>of a record of events) starting with the earliest and following the order in which they occurred". So what events are you writing about?</span>
I would have to say that it would be the last sentence that has the most elements of a final summary.
Hope this helps!
It is a cabinet containg the cards of a librabry depicting where certain books are placed.
It helps create a concerned, yet optimistic tone.