Baptist Church in the Great Valley, The. Organized in 1711 by Welsh families, it is the second oldest Baptist church in the State and the mother of eight nearby congregations. The present building, the second, was erected in 1805. (missing) SR 1007 (Cassatt Rd.), .4 mile SE of PA 252, Tredyffrin Township, PA by Pennsylvania Historical and Museum Commission Colour: blue Wikimedia: Flickr: Google Streetview OpenStreetMap