Question: when was the national park service formed?
About the article "Yosemite National Park", section "U.S. National Park Service".

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Versailles (pronounced locally as "ver-SAYLES") is an Indiana state park, near the town of Versailles, Indiana, USA.
The land was given by the National Park Service for use as a state park to Indiana's Department of Conservation in 1943.
In the early 20th century, the area was farmland.
In the 1930s, the National Park Service acquired the land and hired the Civilian Conservation Corps (CCC) to improve the land into a Recreational Demonstration Area.
The Versailles Lake was formed in 1954 when a dam was built across Laughery Creek. 
The Quinn Ranger Station, also known as the Quinn Patrol Cabin and Quinn's Horse Camp, is the only surviving ranger station from the time when Sequoia National Park was administered by the U.S. Army.
Sequoia was the second National Park to be established after Yellowstone National Park, and predated the establishment of the National Park Service.
The one-room log cabin was built in 1907, in early National Park Service Rustic style. 
New South Wales has more than 780 national parks and reserves covering more than 8% of the state.
These parks range from rainforests, spectacular waterfalls, rugged bush to marine wonderlands and outback deserts, including World Heritage areas.
The Royal National Park on the southern outskirts of Sydney became Australia's first National Park when proclaimed on 26 April 1879.
Originally named The National Park until 1955, this park was the second National Park to be established in the world after Yellowstone National Park in the U.S. Kosciuszko National Park is the largest park in state encompassing New South Wales' alpine region.
The National Parks Association was formed in 1957 to create a system of national parks all over New South Wales which led to the formation of the National Parks and Wildlife Service in 1967.
This government agency is responsible for developing and maintaining the parks and reserve system, and conserving natural and cultural heritage, in the state of New South Wales.
These parks preserve special habitats, plants and wildlife, such as the Wollemi National Park where the Wollemi Pine grows and areas sacred to Australian Aboriginals such as Mutawintji National Park in western New South Wales. 
Tippecanoe River is a state park in Pulaski County, Indiana, USA.
It is located south-southwest of South Bend, Indiana.
Noted for a grove of old-growth white pine trees, the park also preserves more than 2 miles (3 km) of undisturbed wetland shoreline on the Tippecanoe River.
It was formed when in 1943 the National Park Service gave to Indiana's Department of Conservation land to form a state park, with other land along the river becoming the Winamac Fish and Wildlife Area.
During the Great Depression of the 1930s, the national government established the Recreational Demonstration Area in the Department of the Interior, National Park Service.
The Park Service located low quality farmlands with high quality park potential.
Along the Tippecanoe River, the Federal Government purchased .
The high sand content of the soil made this poor quality farm lands.
The river way and forest made it quality parklands.
Development of the Demonstration Area was undertaken by the Works Progress Administration.
In 1943, the property was transferred to the State of Indiana's Department of Conservation as a state park.
ON January 1, 1959, were transferred to the Division of Fish and Wildlife as the Winamac Fish and Wildlife Area.
The state park retains of the original development. 
The military park was established on March 2, 1917.
It was transferred from the War Department to the National Park Service August 10, 1933.
As with all historic areas administered by the National Park Service, the military park was listed on the National Register of Historic Places in 1966, when it was established.