Question: WAPK-CD broadcasts in a National Forest created in what year?

Context paragraphs:
Coconino National Forest: The Coconino National Forest is a 1.856-million acre (751,000 ha) United States National Forest located in northern Arizona in the vicinity of Flagstaff.  Originally established in 1898 as the "San Francisco Mountains National Forest Reserve", the area was designated a U.S. National Forest in 1908 when the San Francisco Mountains National Forest Reserve was merged with lands from other surrounding forest reserves to create the Coconino National Forest.  Today, the Coconino National Forest contains diverse landscapes, including deserts, ponderosa pine forests, flatlands, mesas, alpine tundra, and ancient volcanic peaks.  The forest surrounds the towns of Sedona and Flagstaff and borders four other national forests; the Kaibab National Forest to the west and northwest, the Prescott National Forest to the southwest, the Tonto National Forest to the south, and the Apache-Sitgreaves National Forest to the southeast.  The forest contains all or parts of ten designated wilderness areas, including the Kachina Peaks Wilderness, which includes the summit of the San Francisco Peaks.  The headquarters are in Flagstaff.  There are local ranger district offices in Flagstaff, Happy Jack, and Sedona.

Bridger National Forest: Bridger National Forest was first established by the U.S. Forest Service on July 1, 1911 in Wyoming with 577580 acre from part of Bonneville National Forest.  On May 14, 1923 Bridger was transferred Wyoming National Forest, and the name was discontinued.  On March 10, 1943 Wyoming was renamed Bridger.  In 1973 Bridger National Forest was administratively combined with Teton National Forest, creating Bridger-Teton National Forest.  In descending order of land area, Bridger National Forest lands are located in Sublette, Lincoln, Fremont, and Teton counties.  There are local ranger district offices in Afton, Big Piney, Kemmerer, and Pinedale.  Its administrative headquarters reside in Jackson, Wyoming as part of the combined Bridger-Teton National Forest.  Its current area of 1,736,075 acres (7,025.65 km²) represents 51.02% of the combined Bridger-Teton's area of 3,402,644 acres (13,770.01 km²).  The forest includes all of the National Wilderness Preservation System's officially designated Bridger Wilderness.

Trinity National Forest: Trinity National Forest was established as the Trinity Forest Reserve by the U.S. Forest Service in California on April 26, 1905 with 1243042 acre .  It became a National Forest on March 4, 1907.  On July 1, 1908 it gave up some acreage to California National Forest.  In 1954 it was combined administratively with Shasta National Forest to create Shasta-Trinity National Forest.  Trinity National Forest is located overwhelmingly in Trinity County, which has 89.46% of its acreage.  In descending order of land area the rest of the counties are Tehama with 7.37%, Shasta with 2.93%, and Humboldt with 0.23%.  There are local ranger district offices in Hayfork and Weaverville.  Its administrative offices reside in Redding, as part of the combined Shasta-Trinity National Forest.  As of 30 September 2008, the Forest has an area of 1,043,677 acres (4,223.61 km²), comprising 47.23% of the combined Shasta-Trinity's total 2,209,832 acres (8,942.87 km²).

Cherokee National Forest: The Cherokee National Forest is a large National Forest created on June 14, 1920 and managed by the U.S. Forest Service and encompassing some 655598 acre .

Cache National Forest: Cache National Forest is a 533,840-acre area of National Forest System land in Idaho and Utah which was established on July 1, 1908 by the U.S. Forest Service.  The majority of its area is in Utah, and was initially created when the Bear River National Forest was disbanded.  On July 1, 1915, all of Pocatello National Forest was added.  In 1973 the Idaho portion was transferred to the administration of Caribou National Forest, while the Utah portion was combined administratively with Wasatch National Forest, creating the Wasatch-Cache National Forest.  In descending order of forestland area, the Cache National Forest portion is located in Cache, Bear Lake, Franklin, Weber, Rich, Box Elder, Caribou, and Morgan counties.  (Bear Lake, Franklin, and Caribou counties are in Idaho, and the rest in Utah.)  The forest has a current area of 701453 acre , which comprises 43.56% of the combined Wasatch-Cache's total acreage.  The forest is administered from Salt Lake City, Utah as part of the Wasatch-Cache National Forest, but there are local ranger district offices in Logan and Ogden.  From circa 1911 until August 1923, the area was roamed by Old Ephraim.

Deschutes National Forest: The Deschutes National Forest is a United States National Forest located in parts of Deschutes, Klamath, Lake, and Jefferson counties in central Oregon.  It comprises 1.8 e6acre along the east side of the Cascade Range.  In 1908, the Deschutes National Forest was established from parts of the Blue Mountains, Cascade, and Fremont National Forests.  In 1911, parts of the Deschutes National Forest were split off to form the Ochoco and Paulina National Forests, and parts of the Cascade and Oregon National Forests were added to the Deschutes.  In 1915, the lands of the Paulina National Forest were rejoined to the Deschutes National Forest.  A 1993 Forest Service study estimated that the extent of old growth in the forest was 348100 acre .  Within the boundaries of the Deschutes National Forest is the Newberry National Volcanic Monument, containing cinder cones, lava flows, and lava tubes.  The Deschutes National Forest as a whole contains in excess of 250 known caves.

Jamanxim National Forest: The Jamanxim National Forest (Portuguese: "Floresta Nacional do Jamanxim" ) is a national forest created in 2006 in the state of Pará, Brazil.

Palouse National Forest: The Palouse Forest Reserve and after March 4, 1907, the Palouse National Forest was established by Presidential Proclamation (34 U.S. Statutes at Large 3293) on March 2, 1907 and was one of President Theodore Roosevelt's Midnight forests, created before the federal law banning new forest reserves in six western states, including Idaho, became effective.  The conventional wisdom has the name ‘palouse’ being derived from the French term for the large treeless plain region in eastern Washington stretching into Idaho: the Palouse, a word meaning grassy spot or place.  However, Boone says that the name could originate from the name of a major village of Palouse Indians, Palus, located at the confluence of the Palouse and Snake Rivers.  'Palus' is the Sachapin Indian word for “something sticking down in the water,” in this case the something was a large rock, thought to be a beaver’s heart, and which had an important religious significance for the Palouse Indians.  The Palouse National Forest had its administrative headquarters in the town of Wallace, Idaho for its 15-month existence and was administered by the U.S. Forest Service with 194404 acre .  With the issuance of Executive Order 843 by President Roosevelt on June 26, 1908, with an effective date of July 1, 1908, the entire forest was absorbed by the Coeur d'Alene National Forest and the area ceased to be an independently administered national forest.  The lands of the former Palouse National Forest were then administered as part of the Coeur d’Alene National Forest for three years before being combined with other lands to establish the St. Joe National Forest on July 1, 1911.  The area of the former Palouse National Forest formed the western portion of the St. Joe National Forest.  Once transferred in 1911, the area of the Palouse National Forest became the Palouse Ranger District of the St. Joe National Forest and is still considered part of the St. Joe National Forest.  However, it has been administered by the Clearwater National Forest since the 1973 administrative merger of the Kaniksu National Forest, Coeur d’Alene, and St. Joe National Forests into the Idaho Panhandle National Forests.

Wasatch National Forest: Wasatch National Forest was established as the Wasatch Forest Reserve by the U.S. Forest Service in Utah on August 16, 1906 with 86440 acre to the east of Salt Lake City and Provo.  It became a National Forest on March 4, 1907.  On July 1, 1908 Grantsville National Forest and Salt Lake National Forest were added.  In 1973 Wasatch was combined administratively with Cache National Forest, creating Wasatch-Cache National Forest.  In descending order of acreage, the Wasatch National Forest portion is located in Summit, Tooele, Salt Lake, Davis, Uinta (Wyoming), Duchesne, Wasatch, Morgan, Utah, Weber, and Juab counties in Utah except Uinta, which is in southwestern Wyoming.  Its total area was 908731 acre , comprising 56.44% of the combined Wasatch-Cache's 1610184 acre as of 2008.  There are local ranger district offices in Kamas and Salt Lake City in Utah, and in Evanston and Mountain View in Wyoming.  Administrative headquarters reside with the combined Uinta-Wasatch-Cache National Forest in South Jordan, Utah.

WAPK-CD: WAPK-CD is the Class A MeTV-affiliated television station for Northeastern Tennessee and Southwestern Virginia that is licensed to Kingsport, Tennessee.  It broadcasts a low-powered digital signal on UHF channel 36 from a transmitter on Holston High Point at Holston Mountain in the Cherokee National Forest.

Supporting paragraphs: WAPK-CD Cherokee National Forest
Answer: 1920