The Drac 3-pack consisted of Blood of Dracula (1957), Brides of Dracula (1960) and Horror of Dracula (1958).
Blood of Dracula features a woman who turns into a vampire under hypnosis as the villain. She also sprouts some major league eyebrows along with her fangs.
Here's the trailer for it (below).
Brides of Dracula, a British Hammer Film, doesn't have Dracula in it either. It stars Peter Cushing as Dr. Van Helsing and Yvonne Monlaur as a schoolteacher terrorized by a vampire named Baron Meinster. (It's actually the sequel to the third movie, Horror of Dracula.)
Here's the trailer for Brides of Dracula (below).
Here's the trailer for Horror of Dracula!
At least now you have a pretty good idea of what the people shivering in their cars at the Lorain Drive-in fifty years ago were, uh, enjoying on the big screen.
Hey, I almost forgot my fave-o-rite drive-in movie intermission ad (below). They were still showing it at the Aut-O-Rama out in North Ridgeville the last few years.