Hans F. Sennholz (; ; 3 February 1922 – 23 June 2007) was a German-born American Austrian School economist and prolific author who studied under Ludwig von Mises. A Luftwaffe pilot during World War II, he was shot down over North Africa on 31 August 1942, and spent the remainder of the war in a POW camp in the United States. After returning to Germany, Sennholz took degrees at the universities of Marburg in 1948 and Köln in 1949. He then moved to the United States to study for a Ph.D. at New York University where he became Mises' first PhD student in the United States. He taught economics at Grove City College, 1956–1992. After he retired, he became president of the Foundation for Economic Education, 1992–1997. Early life World War II He was drafted into the Luftwaffe during World War II and became the pilot of a Messerschmitt Bf 109, earning the Iron Cross for valor from his engagements in Norway, France, and Russia. He was shot down over North Africa on August 31, 1942, at a time when the battle for north Africa was intensifying, and spent the remainder of the war in a POW camp in the United States, ultimately located to a POW camp in Wilson, Arkansas, where he worked from 1945 to 1946 at the Wilson dairy farm "milking 20 cows twice a day". Wartime diary During his stay in Arkansas, he maintained a journal of his time as a POW prisoner. When he was transferred back to Germany in 1946, he gave the journal to a trusted guard. "Please send this to my home when the time comes." But the journal never arrived. In 1964, William Harrison, a factory worker in Jonesboro, Arkansas, found the journal along the banks of Bay Ditch, a drainage artery bordering 'old' Highway 63, and kept it. In November, 1985, Harrison took the journal to Scott Darwin, a professor of German at Arkansas State University. Darwin informed Harrison that no one on staff could read it because it had been hand written in a script of German that was no longer used. The journal was eventually translated by Erika Cohen, the German-born wife of Robert S. Cohen, M.D., whom she married while he was serving in the U.S. Army Medical Corps. Having attended school in the 1930s, she was able to read the script. The journal told the story