Spencer J. Sadler has researched countless documents and interviewed numerous residents to uncover stories and photographs to chronicle the 66-year legacy of Pennsylvania's Coal an...visualizza altroSpencer J. Sadler has researched countless documents and interviewed numerous residents to uncover stories and photographs to chronicle the 66-year legacy of Pennsylvania's Coal and Iron Police. A resident of the coal region of Indiana County, he has incorporated rare photographic materials from historical societies, university libraries, national and state agencies, and private collections.visualizza meno