Mount Whitney (4'421 m) is known as the highest mountain in the Sierra Nevada and also the highest summit in the United States outside of Alaska.
Liberia 2001, Mt. Whitney & the Golden Gate Bridge, San Francisco.
The stamp was issued in the series "A Philatelic Tour of The World".
Zambia 2002, Mount Whitney.
The stamp was issued in the series "International Year of Mountains".
It depicts the Keeler Needle (left) and the main peak.