Both book of the Pern series, which I remember fondly as a kid / young adult read though they can probably be enjoyed by anyone with a taste for not too overly complicated science-fantasy tales.

They narrate about the same events from two different viewpoints (that of dragonriders and that of "grounders" so to speak).

http://bookmooch.com/m/related?asin=0552124990
http://bookmooch.com/m/related?asin=0345339495

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A deadly epidemic was sweeping across Pern. Everyone, holder and dragonrider alike, pitched in to help -- except Nerilka's father, who refused to share Fort Hold's bounty with the other Holds. So, ashamed of her family and determined to do her part, Nerilka packed up medicines and supplies and sneaked off to aid her people.

Her quest to help wherever she was most needed led her finally to Ruatha Hold, where Lord Alessan was frantically preparing the precious serum needed for mass inoculations against the dread plague.

Nerilka had long ago abandoned the hope of marriage and a home of her own. Now she found happiness in being useful and appreciated -- first the Healers and then Alessan made very clear that they were grateful for her help.

She had no idea that her new path would change the course of her life forever !
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I know it's already on Jon's list, but I'd like to say that Audrey Niffenegger : The Time Travellers Wife is one of the best books I've read in the last couple years. The story is brilliant, and I have recommended it to pretty much everyone I know. Another suggestion is SELDON EDWARDS : THE LITTLE BOOK . Much of it is set in Vienna at the end of the 19th century, which he describes quite vividly. Also, don't forget a classic, Robert A. Heinlein : Farnhams Freehold . It's an oldie but goodie from the seventies. Kind of a cross-over time travel/post apocalyptic novel.