The books are each named The Elder Scrolls [Insert Name].
1 & 2 are Arena and Daggerfall:
[img]http://i.imgur.com/EydQCsd.png[/img]
So nothing special for 1997.
3 is Morrowind. Odd, but still not special, because it was already announced back then.
4 is OBLIVION and 5 is Romanelli (lolwut?)
[img]http://i.imgur.com/ULdzWF2.png[/img]
Totally made my day.