http://pec.lib.wvu.edu/record/P174311922Endless Caverns : Wonderful and spectacular, New Market, Virginia, in the heart of the Shenandoah Valley.Pamphlet. Endless Caverns (Va.)Shenandoah River Valley (Va. and W. Va.)--Description and travel.Caves--Shenandoah River Valley (Va. and W. Va.)Caves--Virginia--New Market.14256