Hoosac Mountain

Hoosac Mountain, in the Green Mountain Range in Massachusetts, is noted for its railway tunnel, nearly 5 m. in length, and the longest in America.

Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)

Hooper, John * Hope, Antony
Honved`
Hood, Samuel, Viscount
Hood, Thomas
Hooghly
Hook, Theodore
Hooke, Robert
Hooker, Richard
Hooker, Sir William
Hoolee
Hooper, John
Hoosac Mountain
Hope, Antony
Hope, Thomas
Hôpital, Michel de l'
Hopkins, Samuel
Horatii
Horatius Flaccus
Horn, Cape
Horn Gate
Hornbook
Horrocks, Jeremiah