Ok, now remember I'm partially computer illiterate, but I will try to post some links below to the things I've been referring to:
Map of nearby Cracker Barrel locations--
Whoa, that's a long one. It may not work, let me know if not. Otherwise, go to crackerbarrel.com and do the location search. The museum address is 211 Gervais St., Columbia, SC and I didn't put the zip code, but it still worked. There are two locations of the restaurant within 10 miles of the museum, but Bush River Rd. is the closest.