- 3 Harmony
- 1 Harmony, Pennsylvania
- 4 Harness, William, 1790-1869
- 4 Harnesses
- 1 Harper & Bros.
- 4 Harper & Brothers
- 1 Harpers Ferry National Historical Park, West Virginia
- 2 Harpers Ferry, West Virginia
- 3 Harper's Fork Factory
- 1 Harpers Hollow Park
- 1 Harper's Shovel Manufactory
- 11 Harper's weekly
- 74 Harps
- 2 Harpsichords
- 1 Harris Bottling
- 3 Harris Manufacturing Co.
- 2 Harris, R.S. Iron Proof Manufacturing
- 5 Harris, Samuel L.
- 6 Harris, Thomas, architect.
- 1 Harris, William (manure)
- 2 Harrisburg Car Manufacturing Co.
- 1 Harrisburg, Pennsylvania
- 7 Harrisburg, Pennsylvania
- 4 Harrison Boiler Works
- 1 Harrison Bros. & Co.
- 1 Harrison Bros. & Co. Gray's Ferry Chemical Works
- 1 Harrison Building
- 1 Harrison Dye Works
- 2 Harrison Mansion
- 4 Harrison, Joseph, 1810-1874
- 3 Harrison, Lou, 1917-2003
- 1 Harrock's Bleaching Mill
- 1 Harrow, England (borough)
- 2 Harrowgate Hotel
- 2 Harrowgate Hotel
- 2 Harrows
- 1 Harry Edward's Saloon
- 1 Harry T. Kingston, Attorney at Law
- 3 Harshaw , Fuller & Goodwin Glycerine Factory
- 1 Hart, John S. (John Seely), 1810-1877
