Xerox Films! I always wondered if that was a division of the company famous for office equipment such as photocopy machines and printers. They distributed the "Schoolhouse Rock" series (a Saturday morning TV staple of the time) to schools for classroom use. They also had a series called "When You Grow Up," with each film focusing on a specific profession that might be of interest to kids when they got older. (There was even one about working in a chocolate factory!) I can still sing that series' catchy theme song over 4 decades later. When a Xerox-branded film was shown in my elementary school classroom, it was almost always Schoolhouse Rock if it was a smaller reel, or When You Grow Up if it was a larger one.