Mount Jackson el. 8231 feet (2,508.8 m) is a mountain peak just north of the Madison River

Madison River

The Madison River is a headwater tributary of the Missouri River, approximately 183 miles long, in Wyoming and Montana. Its confluence with the Jefferson and Gallatin rivers near Three Forks, Montana form the Missouri River....

, in the Gallatin Range

Gallatin Range

The Gallatin Range is located in the U.S. states of Montana and Wyoming and includes more than 10 mountains over . The highest peak in the range is Electric Peak at . The Gallatin Range was named after Albert Gallatin, the longest-serving US Secretary of the Treasury and one of the negotiators of...

 of Yellowstone National Park

Yellowstone National Park

Yellowstone National Park, established by the U.S. Congress and signed into law by President Ulysses S. Grant on March 1, 1872, is a national park located primarily in the U.S. state of Wyoming, although it also extends into Montana and Idaho...

. Mount Jackson is named in honor of William Henry Jackson

William Henry Jackson

William Henry Jackson was an American painter, Civil War, geological survey photographer and an explorer famous for his images of the American West...

, chief photographer of the Hayden Geological Survey of 1871

Hayden Geological Survey of 1871

The Hayden Geological Survey of 1871 explored the region of northwestern Wyoming that later became Yellowstone National Park in 1872. It was led by geologist Ferdinand Vandeveer Hayden...

 and a member of several subsequent geological surveys in the park. Jackson's photographs are some of the earliest ever taken in Yellowstone. The name was suggested by a park naturalist in 1935 but not awarded until 1937 when Jackson, who was still living gave his approval. Jackson visited the park regularly until his death in 1942.