Piedmont Triad Research Park - Where Innovation Lives Piedmont Triad Research Park (PTRP) offers a research park and city concept through innovation. Positioned in a high growth environment, the Research Park expansion plans provide opportunities to advance research programs by increasing awareness and accelerating commercial applications. Ptrp.com~Site InfoWhoisTrace RouteRBL Check
C&O Piedmont Subdivision Homepage The Piedmont Sub was the oldest section of the C&O: it was chartered as the Louisa Railroad in 1836. This site is intended to chronicle the history and development of the Piedmont Sub. Each town has its own page with photos and maps. Piedmontsub.com~Site InfoWhoisTrace RouteRBL Check