Premiering in 1978, the primetime soap opera Dallas revolved around a wealthy oiling and cattle-ranching family in Texas. The show was intended to be a five-part miniseries but was so popular that its creators turned it into a regular series instead, and TV history was made. Dallas is now included in TIME magazine’s list of the “100 Best TV Shows of All Time” and retains a loyal fan base. How much do you remember about the original Dallas? Test your knowledge about the show’s original 1978 to 1991 run right now and check out some rare behind-the-scenes photos while you’re at it.