• German Migration Into and Out of Pennsylvania by Milton Rubincam • German Church Records in Western Pennsylvania by Paul M Ruff • Church Archives Relating to Pennsylvania Germans by Ruth B Allen • Worship in Lutheran Churches in the 18th Century by Frederick S Weiser • Court Records of Pennsylvania by Helen S Snyder • Our Keystone Families by Schuyler C Brossman • The Pennsylvania Bureau of Land Records Historical & Museum Commission and the State Library of Pennsylvania