Most Popular Books
- George Rapp's Separatists: 1700 1803
- Harmony on the Connoquenessing, 1803-1815: George Rapp's first American Harmony : a documentary history = Harmonie am Connoquenessing : Georg Rapps erste amerikanische Harmonie
- George Rapp's Harmony Society, 1785-1847,
- The German language press of the Americas, 1732-1968;: History and bibliography. Volume 2: Argentina, Bolivia, Brazil, Canada, Chile, Colombia, Costa Rica, ... Peru, USA (Addenda), Uruguay, Venezuela,
- George Rapp's successors and material heirs, 1847-1916
