This video is kind of funny in a historical sense and also just fun to watch. The secretary does take dictation and is given direction on it and also types it up. It was made by Underwood who made typewriters, so you will see that name on the typewriter. I actually like this typewriter, there's no return bar at the top like many had for years after that.
1947 Duties of a Secretary
From the site: It tells the story of a young girl, just hired as a secretary for a real estate broker, who dreams that she does everything wrong on her first day at the office; but she awakes, to report for the job, with all the competence of an experienced secretary at her command. The device is ideal for sustaining interest in the duties of an efficient secretary.