My between-books strategy was reading voraciously and on a whim.

I've really tried to strip my writing of as many adjectives and adverbs as I possibly can.

I write to be read. I'm quite direct about that. I'm not writing to thrill colleagues or to impress the professors at the University of Iowa; that's not my goal.

It was David McCullough's 'The Johnstown Flood' that lit my imagination as to how I might one day go about writing book-length nonfiction, though my favorite of his books is 'Mornings on Horseback,' about the young Teddy Roosevelt.

After I finish writing a chapter, I'll print it out, cut it up into paragraphs, and cut away any transition sentences. Then I shuffle all the paragraphs and lay them out as they come. As I arrange and hold them next to each other, very quickly a natural structure for the chapter presents itself.

As a rule, I am very skeptical of tying books to anniversaries. I don't think readers care. I also feel that it just about guarantees that somebody else will be writing a book on the same subject, but being a former journalist, I'm always interested in, like, why write about something today? Why do it now?