3 Hooker Co. (tin cans and stamping)
1 Hoopes & Townsend
1 Hoopes, Bro., & Darlington
1 Hoover Dam
14 Hoover, Herbert, 1874-1964
5 Hope
7 Hope Street
3 Hopkinson, Francis, 1737-1791
1 Hops
1 Horace B. Wikley Caterer, Oysters (Firm)
1 Horace Linton & Bro. (ribbon weaving)
36 Horace Trumbauer (Firm)
1 Horbury Mills (Mortimer)
3 Horn & Hardart Baking Co.
5 Horn & Hardart's Ice Cream
117 Hornbooks
2 Horne, Catherine, Clare, St. George, Foggo
11 Horne, R. H. (Richard H.), 1802-1884
1 Horner's Varnish Factory
1 Horns (Anatomy)
1 Horns (animal components)
1 Horrocks Street
3 Horse racetracks
1 Horse racing
5 Horse racing
117 Horse railroads
2 Horse teams
6 Horse troughs
104 Horseback riding
45 Horsecars
662 Horse-drawn vehicles
513 Horses
1 Horse's head (Sculpture)
2 Horsham, Pennsylvania
3 Horstmann's Manufactory
1 Horter Street
6 Horticultural buildings
1 Horticultural Drive
98 Horticultural Hall
9 Horticultural Hall (Broad Street)