My thanks to classmate, Linda Hagler Mosk (DHS '68), for letting me scan these items. (I think I saved my copies, but I'd have to dig through a lot of stuff to find them.) The Class of '68 is celebrating its 45th anniversary this year, so I thought I'd post this ancient relic.
The program lists Dr. Robert B. Howsam as the principal speaker, but I can't remember anything about him. In fact, I remember few details about that night except we had torrential rainstorms through the day, so the ceremony was in the Dulles Junior High gym. I also remember that my mother was sick and couldn't attend.
Anyway, Dr. Howsam was Dean of U of H's College of Education. Here's the best reference I could find on the Internet.
"Dulles High we pledge to you/ We'll be loyal, we'll be true ...."