Hairy Armadillo, Andean
Hakluyt, Richard
Haldeman-Julius, Emanuel
Hale, George Ellery
--Palomar Mountain Observatory
Hale, Nathan
Halicarnassus, Mausoleum at
Halloween
Hamilton, Alexander
--The Federalist
Hammarskjöld, Dag Hjalmar Agne Carl
Hamsters
Hand, Human
Hanging Gardens of Babylon
Hank Ballard and the Midnighters
Harbor Seal
Hargreaves, James
--Spinning Jenny
Harlequin Duck
Harmonica
Harmonica, Glass
Harpers Ferry, West Virginia
--John Brown's Raid
Harris, Joel Chandler
Harrison, William Henry
Hartford, Connecticut
Harun al-Rashid
Harvey, Frederick H.
Harvey, William
Harvey Girls
Hats
Haughey, Charles James
--Hauksbee's Air Pump
Hawaii
Hawk Moths
Hawkins, Coleman
Hayden, Carl Trumbull
Haydn, Franz Joseph
Hayes, Helen
Hayes, Rutherford Birchard
--Presidential Election of 1876
Hayworth, Rita
Heart, Human
--How it Works
--Parts
Heat
Helicopter
--Sikorsky, Igor
Helium
Helsinki, Finland
Henry, Patrick
Henson, Matthew Alexander
Herbs
Hereford (cattle breed)
Hermes
Herschel, (Sir) William
Hibiscus spp.
Himalaya
Hippocrates
Hippocratic Oath
Hippopotamus, Pygmy
Hockey, Ice
Hogan, William Ben
Holkeri, Harri
Holliday, Cyrus Kurtz
Holstein-Friesian (cattle breed)
Homing Pigeon
Hoover, Herbert Clark
Hope, Bob
Hornbill, Rufous-Necked
Horses
Horseshoe Bend, Battle of
--Jackson, Andrew
House Spider, Common
Houston, Sam
Howe, Julia Ward
Howells, William Dean
Howland, Esther Allen
Hu Yaobang
Hubbard, William DeHart
Hudson, Henry
Hudson's Bay Company
Hughes, James Langston
Hughes Flying Boat
Human Rights, International Year for
Hungary
Hunter, John
Hunter, Robert Hancock
Hunting Dog, African
(King) Hussein of Jordan
Huxley, Aldous Leonard
Huygens, Christiaan
Hydrogen Bomb
--Teller, Edward
Hymenoptera