Taking the name Pennsylvania Dutch from a corruption of their own word for themselves, "Deutsch," the first German settlers arrived in Pennsylvania in 1683. By the time of the American Revolution, their influence was such that Benjamin Franklin, among others, worried that German would become the commonwealth's official language. The continuing influence of the Church peoples-the Amish and Mennonites and others who constitute the still-vibrant Dutch culture-can be seen today in icons of Americana from apple pie to log cabins.

The Landis family of Landis Valley was ordinary and extraordinary at the same time. Its members were typical Pennsylvania Germans of their era, focused on farming and family, yet they also traveled, edited magazines, and became the founders of the Landis Valley Museum. The Landis family settled in Lancaster County in the 18th century, where Henry Harrison Landis and his wife, Emma Caroline Landis, raised their children, Henry Kinzer, George Diller, and Nettie Mae, in a cross-cultural environment. Descended from Mennonite and Reformed Church families, the Landis family formed an appreciation...