He served as member of the faculty of the College of Commerce at the University of Illinois at Urbana–Champaign from 1928 to 1930 while working his way through law school.

[2] Howell was nominated by President Harry S. Truman on July 18, 1947, to a seat on the United States Court of Claims vacated by Judge John Marvin Jones.

[3] Following his resignation from the federal bench, Howell served as Chairman of the Illinois State Toll Highway Commission from 1953 to 1955.

[4] After his retirement, he resided in Largo, Florida, until his death in Clearwater, Florida on January 18, 1980, whereupon he was cremated and his remains were entombed in a niche in the Columbarium at the Arlington National Cemetery in Arlington County, Virginia.

[2] This article incorporates public domain material from the Biographical Directory of the United States Congress