Thanks again for your replies.
Horry County Oral History Project - I have viewed an online index of individuals who were intervied, but haven't yet viewed a list of topics. I think there is an index available at the college, so I'll check into that again later.
Obituaries from Horry County Newspapers, 1861-1914 - There are some Rabons listed, but none for M. A. and S. W.'s immediate family.
worldcat.org - Thanks for introducing me to this site. I've checked it out and found it to be very informative.
I frequent the local libraries regularly and have inquired before about interlibrary loans. They are generally pretty good about that.
I've not yet contacted the church for the cemetery where the family was buried, but I plan to do that in the near future.
Thanks again for your help. Good luck in your own searches. Let me know if I can help in any way.