https://www.watkinsmuseum.org/]]> https://archive.org/details/plank-fred-wwii-interview]]> https://obituaries.ljworld.com/obituaries/ljworld/obituary.aspx?n=fred-plank&pid=182126229&fhid=20441]]> https://www.kansasmemory.org/item/212784]]> https://www.loc.gov/vets/vets-home.htm]]>