It ranks higher than a book about Bonnie and Clyde. It's on the heels of a Tony Hillerman collection of nonfiction essays. 

"Mama's Santos," Star reporter Carmen Duarte's story about her mother who labored in cotton fields for much of her 90 years in Arizona and New Mexico, has broken the Top 10 in Amazon's list of best-selling books about Southwestern United States history, as of the evening of Dec. 6. 

It's available on Amazon and Nook. Find it and the Star's other e-books at azstarnet.com/ebooks