Larson was born near Conway on 2 March 1909, to parents Lewis and Nora.
[2][3] Larson graduated from Conway High School in 1927 and earned an associate's degree in animal husbandry from Iowa State College, then operated his own farm in Taylor County, Iowa.
He was then elected to one four-year term on the Iowa Senate as a Republican legislator for District 6.
[1] Larson's tenure as a state senator overlapped with his stint on the county board of education.
[1][2] After King died in 1988, Larson remarried in 1992, to Irma Thummel, moved to Bedford, and retired from farming.