In West with Giraffes, Lynda Rutledge has written the best story I can remember reading since Great Circle by Maggie Showstead (reviewed here). Thank you, Karen, for recommending it! At age 105, our protagonist, Woodrow Wilson Nickel, learns that giraffes may be going extinct. In response, he feels compelled to write down his story from 1938, when as a 17-year-old with plenty of real-life problems of his own, he became part of a caravan that transported two giraffes across country from New York City to the San Diego Zoo.