This book covers the Mennonite Shelly family and their migration from Bern, Switzerland, to Lancaster County, Pennsylvania, in the early 18th century and specifically their history in the settlement of the Susquehanna Valley; with emphasis on their history and ownership of islands in the Susquehanna River. It lists the Shelly descendants and associated family members including: Croll, Etter, Hershey, Rife, and many other associated families. Written by Joanne E. (Leas) Liebert and Michael F. Leas. (319pp. illus. index. Masthof Press, 2019.)