Harvey Wittingen Obituary (1924 - 2016) - Hudsonville, MI
Joyce Wittingen Obituary
Someone in Germany Has Been Killing People With a Crossbow—and No One Seems to Know Why
Mary Wittingen Obituary (1926 - 2019) - Hudsonville, MI
Crossbows, 5 Bodies, 2 Crime Scenes and a Mystery in Germany (Published 2019)
Wittingen and Tracy
Crossbow German deaths: More bodies found after Passau killings
Passau crossbow deaths may be suicides, of a sort
Obituaries Today: Helen Wittingen, 86, married 63 years
Wittingen and Rouwhorst