- Clothing and dress--History--20th century.1
- Cowboys.1
- Crowds.1
- Edison Electric Light Company.1
- Edison, Thomas A. (Thomas Alva), 1847-1931.1
- Electric lighting.1
- Farms.1
- Fashion -- History -- 20th century.1
- Ford, Henry, 1863-1947.1
- Ford, John, 1894-1973.1
- Germany--Relations--United States--History.1
- Hays, Will H. (Will Harrison), 1879-1954.1
- Hoover, Herbert, 1874-1964.1
- Inventions.1
- Inventors.1
- Jehl, Francis, 1860-1941.1
- Latimer, Julian Lane, 1868-1939.1
- Lawn mowers.1
- Los Angeles (Airship)1
- Models (Persons)--United States.1