William F. (Bill) Koch Jr., 83, of Haverhill, N.H. died July 15, 2009 at DHMC following failing health. Born in Haverhill, N.H., he is the son of William Koch Sr. and Lillie Koch. He graduated from Haverhill Academy and enlisted in the Army Air Force as a navigator, after the war participated in flying two bombers, wing to wing, under the Golden Gate Bridge. At the end of World War II he entered the University of New Hampshire on the GI Bill and graduated in 1950 with a degree in Forestry. Bill worked for several years in Haverhill, N.H. with his father, William Koch Sr., crafting and producing the Koch recorder, a woodwind musical instrument. Later, he moved to Milford, N.H. and worked as a manufacturing engineer at Sanders Associates in Nashua, N.H. On his retirement he moved back to Haverhill to be near his family. He enjoyed spending time at Lake Armington in Piermont, N.H. where as a young man, built a camp to enjoy with family and friends. He also enjoyed amateur photography, ham radio operating, hiking and volunteering in the town of Haverhill Fire Department and supervising the repair and status of the town water supply.. He is survived by his wife, Mary Campbell, a brother, John G. Koch, of White River Junction, Vt.; His children, Margaret Koch with John Perham of North Hampton, N.H., Thomas Palmer and wife Joanne of Barrington, N.H., Suzanne George and husband Mike of Dover, N.H. and Richard Koch and wife Gloria of Nashua, N.H.; stepsons, Dana King and wife Brenda of Essex, MA, Steven King of Essex, MA, many beloved grandchildren and great-grandchildren and will be affectionately remembered by his friends, Mary's caretakers, Tina Fellows and her family. Memorial contributions can be made to the Haverhill Corner Fire Dept., P.O. Box 11, Haverhill, NH 03765. Celebration of Life to be held in mid September. Please contact Mike at 603-842-2235 for information .