Embedded Player If it absolutely, positively had to get there overnight -- or as soon as possible in 1860 -- you'd have to put it on the Pony Express. Their riders could travel from Missouri to California in a recording-breaking 10 days. But a little over a year after the first rider set out, the company closed under major debt. NPR's Linda Wertheimer talks with the author of a new book offering a revisionist history.