Tony Hillerman — American Author born on May 27, 1925,

Tony Hillerman was an award-winning American author of detective novels and non-fiction works best known for his Navajo Tribal Police mystery novels. Several of his works have been adapted as big-screen and television movies... (wikipedia)

An author knows his landscape best; he can stand around, smell the wind, get a feel for his place.
Having grown up in Oklahoma when it was one of the last states which prohibited liquor, I grew up with War On Drugs, where every teenager knew who the bootleggers were.
Although I wasn't able to get a visa for Vietnam, I was able to talk with swift boat veterans to get a feel for the time and place, and I visited a tropical prison in the Philippines to get a sense of what a Vietnamese prison might have been like.
Being Indian is not blood as much as it is culture.
The essays in The Great Taos Bank Robbery were my project to win a Master of Arts degree in English when I quit being a newspaper editor and went back to college.