I don't know if if it's still there, but there used to be a really huge display of memorabilia and photos in their pilot training center along their first floor hallway that went on forever with photos spanning their history: from crewmembers dressed up in toga at company parties to NASA astronauts that became pilots, some of it really throwing back to their old school wild west culture.
Highly recommend reading Hard Landing by Thomas Petzinger for a little more background on SWA rough and tumble startup story with Herb K.