Subject
- Children.1
- Classrooms.1
- Clocks.1
- Desks.1
- Dresden (Ship)1
- Edison Electric Light Company.1
- Edison, Thomas A. (Thomas Alva), 1847-1931.1
- Electric lighting.1
- Engineers.1
- Entertainers--United States.1
- Fishing.1
- Ford, Henry, 1863-1947.1
- Helicopter pilots.1
- Helicopters.1
- Hilker, Franz, 1881-1
- Hoover, Herbert, 1874-1964.1
- Jehl, Francis, 1860-1941.1
- Lincoln Park Zoo--Description and travel.1
- Longcase clocks.1
- Microphone.1