An interesting side note: While reading this I noticed an error. Molly's train stops in Council Bluffs, IA, then crosses the Mississippi River into the western frontier. Not! So I e-mailed the author and received a prompt reply:
Oh dear. So many people have caught this error. Sorry. The embarrassing thing is that I have driven across that bridge a couple of times so I should have known better. Also my manuscript is read by a whole line of editors who should have checked my facts.