 From at least 1914 to 1917, he was the Chief Deputy Assessor of Stevens County, Washington, at Colville, in the northeastern part of the state.In February 1918, Dvorak and his wife had a son, Robert Larry Dvorak (1918–1986), who was born in Spirit Lake, Idaho.In 1920, Dvorak moved to Seattle, Washington, where he was hired as the coach of all athletic teams at Franklin High School.