First park land set aside specifically for preservation and public use by the U.S. federal government; set a precedent for the 1872 creation of Yellowstone as the first national park.
Sierra Club Founded
Organic Act Establishing NPS
National Parks Act of South Africa
"Silent Spring" by Rachel Carson Published
Created a legal definition of wilderness in the United States and protected 9.1 million acres of federal land.
Beaver Trappers in Glacier
French, English, and Spanish trappers came to Glacier in search of beaver.
Lewis and Clark Expedition near Glacier
Lewis and Clark Expedition came within 50 miles of the area that is now Glacier National Park.
George Bird Grinnell
1849 - 1938
Lifespan of George Bird Grinnell, early naturalist who promoted and explored Glacier.
George Bird Grinnell Visits Glacier
George Bird Grinnell hired noted explorer (and later well regarded author) James Willard Schultz to guide him on a hunting expedition into what would later become the park.
Railway over Marias Pass Completed
Railroad over Marias Pass was completed in 1891, allowing homesteaders to enter the area.
Land Acquired from Blackfeet Tribe for Mining
The mountains east of the Continental Divide were acquired in 1895 from the Blackfeet for mining purposes; no large copper or gold deposits were ever located.
Waterton Lakes National Park Founded
Waterton Lakes National Park officially becomes a National Park in Canada.
Glacier Area becomes Forest Preserve
The Glacier National Park area was made a Forest Preserve which was still open to mining and homesteading.
Glacier National Park Founded
Glacier officiated as a National Park.
Waterton-Glacier International Peace Park Established
Canada and the United States declare Waterton Lakes National Park and neighboring Glacier National Park the world’s first International Peace Park.
Work on Going-To-The-Sun Road Completed
After 11 years of work, Going-To-The-Sun Road, the main thoroughfare through Glacier National Park, is completed.
150 Glaciers in Park
There were 150 known glaciers in the Glacier Park area in 1850.
1850 - 2013
Glaciers in the park have shrunk marginally beginning at the close of the Little Ice Age in 1850.
Wilderness Study of Glacier
Wilderness Study submitted to Congress which identified 95% of the area of the park as qualifying for wilderness designation.
Wolves Begin Recolonizing Park Naturally
Around 1980, wolf population began to rise, indicating a nature recolonization of the animal in Glacier Park.
U.S. Geological Survey Research in Glacier
1992 - 2013
The U.S. Geological Survey established a headquarters in Bozeman, Montana and continues to research a number of environmental factors in Glacier Park today.
Some Park Roads Temporarily Closed for Toad Migration
2001 - 2002
A forest fire in 2001 led park officials to close a few park roads temporarily to allow thousands of Western toads to migrate to other areas.
10% of Park Burned by Forest Fires
Following a five year drought and a summer season of almost no precipitation, forest fires obliterate 10% of the park area.
300 Grizzlies Remaining in Glacier
Biologists estimate that grizzly bear population in the park is a little over 300.
Flathead River Valley Protected from Mining, Oil, Gas
Montana Governor Brian Schweitzer and British Columbia Premier Gordon Campbell signed an historic agreement promise=ing to protect the Transboundary Flathead River Valley from all types of mining and oil and gas extraction.
25 "Active Glaciers" Remaining in Park
U.S. Geological Survey shows that 37 glaciers remain in Glacier Park, although only 25 of these are considered to "active glaciers" of at least 25 acres in area.
Estimated Melting Date for Glaciers in Park
Environmentalists estimate that all of the remaining glaciers in the park will be gone by 2020 if current melting trends continue.