Hello, My mother was Betty Aileen Kortkamp(1919-1982). Mom was the grandaughter of William Kortkamp,(b 1847 Mo-died 1933 Hillsboro, montgomery Co Ill) William ran the "Kortkamp" coal mine near Hillsboro. He had two brothers who also worked there, "Fred"(Fredrick) and "Louis" whos real first name was prob not Louis. This Louis supposidly died around 1914 in a Minning disaster. I dont know what type of "disaster" it was though. William,Fred,Louis all lived in Hillsboro area, the family had moved from Madison County, Ill where their grandfather had settled from Prussia.
Bruce C. Brown