Richard Kline, best known for his portrayal of Larry Dallas on "Three's Company" (1977), makes his television/film debut in this episode.
The establishing shot, used for the court building, is the Minneapolis City Hall. Construction began on it in 1881, and was completed 21 years later (Minneapolis is a midwestern city, after all), in 1909. The building is seen here in a strange kind of overhead, then swooping shot, but it's seen much clearer during the series' 2nd year. The building's still there, though most city and county functions have been moved across the plaza to the Hennepin County Government Center it's located at 350 South 5th St., in downtown Minneapolis.