Subjects
- Homestead Strike, Homestead, Pa., 1892.1
- Horse railroads.1
- Horses.1
- Hunting--1870-1890.1
- Ice.1
- Inclined railroads.1
- Indians of North America--California--History--19th century.1
- Industrial facilities.1
- Industry.1
- Insect trapping--Equipment and supplies.1
- Insect traps.1
- Interiors.1
- Inventions.1
- Inventors--United States--History--19th century.1
- Inventors.1
- Irish Americans--History--19th century.1
- Irish Americans--Social conditions--19th century.1
- Iron mining.1
- Irregular warfare--Caribbean Area.1
- Irregular warfare--Cuba.1