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In 1988 he wrote a biography of John Vincent Atanasoff, the Iowa State College professor who invented the first electronic digital computer in 1939.
He spent five years as an experimentalist in agricultural engineering with the Agricultrual Experiment Station of Iowa State College, Ames, Iowa, during which time he invented the hollow clay tile silo.
Most people of the era saw railroads as the solution, but MacDonald went to Iowa State College of Agricultural and Mechanical Arts at Ames (transferring after a year at Iowa State Teachers College) to learn road building as a student of Anson Marston.
In 1922, Trice followed five of his teammates, as well as his former high school coach, Sam Willaman, to Iowa State College in Ames, Iowa.