I stumbled on this link from TMP:
http://www.dailyfreebooks.comI'm always looking for free books for my Kindle so I was rummaging through the historical section and found some nice references for some famous towns in the old west; Deadwood, Dodge City and Tombstone. There are some nice vintage and modern photographs in there so well worth downloading for free. Here are the titles I found, they are part of a series called Legends of the Old West;
Deadwood, South Dakota, Tombstone, Arizona, Dodge City Kansas, and Deadwood and Tombstone; The Wild West's Most Famous Towns.
I haven't actually read them but I have flipped through them for the pictures as reference for Calamity.