2018-06-152018-06-15n.d.http://hdl.handle.net/20.500.11989/1192The front of the post card has an image of independence hall in Dunbar Cave in Clarksville, TN. On the back there is a caption that reads, “Competent guides will show you the wonders that nature has wrought deep in the earth. Everywhere are fantastic formations of stalactites and stalagmites, thousands of years in the making. An underground river disappears and reappears at different points of interest on the tour.”JPEG ImageClarksville (Tenn.)Dunbar Cave (Tenn.: Cave)SpeleothemsImage