Larson was born in Fairfield, Iowa and graduated from Parsons College in 1921.
[3] After graduating he practiced law in Iowa City until 1943 while also teaching at public schools in Wapello and Anamosa.
He was appointed as the state's attorney general in 1947 to fill the unexpired term of John M. Rankin.
[3] In 1953, he was appointed to the Iowa Supreme Court by Governor William S. Beardsley.
[2] Katko v. Briney while an associate justice of the Iowa Supreme Court.