Subjects
- Airplanes1
- Appointments (military records)1
- Basic training (Military education)1
- Boats and boating1
- Correspondence4
- Exploration, Submarine1
- Financial records1
- German Americans1
- German Americans--History--19th century--Sources1
- Letters (correspondence)1
- Maps1
- Military bases -- United States1
- Military pensions.1
- Orders (military records)2
- Pennsylvania--History1