Black Hawk County in Iowa   Waterloo in Black Hawk County Jacob J. “Jake” Biretz Homicide Jacob “Jake” Biretz 87 YOA 311 Lafayette St., Apt. B Waterloo, IA Black Hawk County December 10, 1993   Jacob “Jake” Biretz, an 87-year-old retired mechanic, was found dead in his apartment at a Waterloo retirement home on Friday, […]