Thanks, chatterchit, for the replies to my inquiry about M. A. and S. W. Rabon and a possible epidemic in 1913.
You are correct in your assumption that these people are also known as Matthew A. and Sallie W. Rabon. They would have been my great-great grandparents. One of their daughters, Tula, was my great-grandmother. One of Tula's daughters, Sallie, was my grandmother. Sallie's son, Joe, is my father.
The reason I suspected an epidemic/pandemic/etc. in the case of M. A. and S. W. Rabon's family is because that is the indication given to me by my father, though I've been unable to find record of something wide-spread in Horry County at that time.
I do know that S. W. and four of the children died in the month of July 1913, but M. A. and two of the girls did not. One of the girls eventually moved to the Charleston area and is now deceased. The other girl was my great-grandmother (Tula), who remained in Horry County until her death in the 1970s (before I was born).
Tula had three children (Abram, Sallie, and Tempie). Sallie was my grandmother, but she died when my father was only 10 or 11 years old. All of Tula's children are now deceased - the most recent being my great-aunt, Tempie, who passed in October of 2007 from end-stage Alzheimer's.
I'm in the process of compiling a list of Tula Rabon's descendents, and am learning to be more grateful everyday that my family even exists, as she could easily have died in 1913 like most of the others. The list is almost complete, and I'm really hoping to get it published. Wish me luck!