Affiliations Positions 1949[position unknown]University Of Illinois1950[position unknown]University Of Illinois1951[position unknown]University Of Illinois1952[position unknown]University Of Illinois1953[position unknown]University Of Illinois1954[position unknown]University Of Illinois1955[position unknown]University Of Illinois1956[position unknown]University Of Illinois 1949[subject unknown]Trustee1950[subject unknown]Trustee1951[subject unknown]Trustee1952[subject unknown]Trustee1953[subject unknown]Trustee1954[subject unknown]Trustee1955[subject unknown]Trustee1956[subject unknown]Trustee