paragraph_text: Burton Mound (also known as Syujtun or Syuxtun) is a California Historical Landmark located in Santa Barbara, California, in the United States. It is believed to be a former Native American village that was discovered in 1542 by Juan Rodríguez Cabrillo. Historically known as Syujtun, it was also visited and documented by Juan Crespí, Gaspar de Portolà, and eventually Don Luís Burton, the latter who purchased the property in 1860. The California Department of Parks and Recreation has acknowledged that Burton Mound has "yielded some of the most important archeological evidence found in California".

paragraph_text: Indian Mounds Regional Park is a public park in Saint Paul, Minnesota, United States, featuring six prehistoric Native American burial mounds overlooking the Mississippi River. The oldest mounds were constructed 1,500 -- 2,000 years ago by people of the Hopewell tradition. Later the Dakota people interred their dead there as well. At least 31 more mounds were destroyed by development in the late 19th century. They were the tallest Native American mounds in Minnesota or Wisconsin (except for the unique 45 - foot (14 m) Grand Mound outside International Falls, Minnesota), and comprise one of the northwesternmost Hopewellian sites in North America. Indian Mounds Regional Park is a component of the Mississippi National River and Recreation Area, a unit of the National Park System. The Mounds Group is listed on the National Register of Historic Places. The 2014 nomination document provides a description of the archaeology and the context.

paragraph_text: Rocky Mound is a town in Camp County, Texas, United States. The population was 75 at the 2010 census, down from 93 at the 2000 census.

paragraph_text: Mound Bottom is a prehistoric Native American complex in Cheatham County, Tennessee, located in the Southeastern United States. The complex, which consists of earthen platform and burial mounds, a 7-acre central plaza, and habitation areas, was occupied between approximately 1000 and 1300 AD, during the Mississippian period.

paragraph_text: Purushanda (also variously Purushkanda, Purushhattum or Burushattum) was an ancient city-state in central Anatolia, lying south of the Kızılırmak River in what is now modern Turkey. Its site has yet to be discovered. It may have been situated south-east of Lake Tuz, possibly on the mound of Acemhöyük (located at the village of Yeşilova, Aksaray) approximately north-west of the city of Aksaray. Another possible location is the mound of Karahöyük near Konya.

paragraph_text: Alabama (adopted 1953, Constitution 2016) Arizona (Constitution, State Constitution Article 25 approved 1946) (adopted 1944) Arkansas (Constitution, 1947, Amendment 34) Florida (Constitution, 1944, revised 1968, Article 1, Section 6) Georgia (adopted 1947) Idaho (adopted 1985) Indiana (State law, 2012) Iowa (adopted 1947) Kansas (Constitution, 1958, Article 15, Section 12) Kentucky (adopted 2017) Louisiana (adopted 1976) Michigan (State law, 2012) Mississippi (Constitution, adopted 1954) Missouri (adopted 2017) (Postponed by petition to 2018 for citizen voting) Nebraska (Constitution and statute, adopted 1946) Nevada (adopted 1951) North Carolina (adopted 1947) North Dakota (adopted 1947) Oklahoma (Constitution, adopted 2001) South Carolina (adopted 1954) South Dakota (adopted 1946) Tennessee (adopted 1947) Texas (adopted 1947, revised 1993) Utah (adopted 1955) Virginia (adopted 1947) West Virginia (adopted 2016) (Went into effect September 2017 due to lower court injunctions) Wisconsin (adopted 2015) Wyoming (adopted 1963)

paragraph_text: Wingville is an unincorporated community in Baker County, Oregon, United States. Wingville lies at the intersection of Wingville Lane and Old Wingville Road northwest of Baker City and northeast of Pocahontas.

paragraph_text: Warm Springs is an unincorporated community in Randolph County, Arkansas, United States. Warm Springs is located on Arkansas Highway 251, north-northwest of Pocahontas. Warm Springs has a post office with ZIP code 72478.

paragraph_text: Wheatland is a town in Vernon County, Wisconsin, United States. The population was 533 at the 2000 census. The unincorporated communities of Red Mound, and Victory are located in Wheatland.

paragraph_text: Pocahontas Mounds (22 HI 500) is an archaeological site from the Plaquemine Mississippian culture in Hinds County, Mississippi, dating from 800 to 1300 CE. Two mounds from the site were added to the NRHP on two separate occasions, "Pocahontas Mound A" on November 25, 1969 as NRIS number 69000365 and "Pocahontas Mound B" on April 11, 1972 as NRIS number 72000694.

paragraph_text: Buckeye is an unincorporated community in Pocahontas County, West Virginia, United States. Buckeye is located along U.S. Route 219 southwest of Marlinton. As of mid 2017, there is no longer a post office located in Buckeye.

paragraph_text: Pocahontas is a city in Randolph County, Arkansas, United States, along the Black River. According to 2006 Census Bureau estimates, the population of the city was 6,765. The city is the county seat of Randolph County.

paragraph_text: Lewistown is a city in Fulton County, Illinois, United States. It was named by its founder, Ossian M. Ross, after his oldest son, Lewis W. Ross. The population was 2,384 at the 2010 census, down from 2,522 at the 2000 census. It is the county seat of Fulton County. Located in central Illinois, it is southwest of Peoria. It is the source of "Spoon River Anthology" by Edgar Lee Masters, who lived there. Native American burial mounds are nearby at Dickson Mounds off Illinois Route 97.

paragraph_text: The Nacoochee Mound (Smithsonian trinomial 9WH3) is an archaeological site on the banks of the Chattahoochee River in White County, in the northeast part of the U.S. state of Georgia, at the junction of Georgia State Route 17 and Georgia State Route 75. First occupied as early as 100-500 CE, the site was later developed and occupied more intensively by peoples of the South Appalachian Mississippian culture (a regional variation of the Mississippian culture) from 1350 to 1600 CE. One of their characteristic platform mounds is located at the site. A professional archeological excavation revealed a total of 75 human burials, with artifacts that support dating of the site.

paragraph_text: Nemours is an unincorporated community in Mercer County, West Virginia, United States. Nemours is located along West Virginia Route 102 east of Pocahontas, Virginia. Nemours has a post office with ZIP code 24738.

paragraph_text: It was once thought that large civic sites in Western Kentucky such as Rowlandton Mound, the Twin Mounds Site and the Tolu Site were expansions of the Kincaid Mounds polity in nearby Southern Illinois in the 13th century, but archaeological excavations in 2006 by Dr. Kit Wesler of Murray State University have shown that this was not the case. It is probable that these civic sites were established originally by local Late Woodland peoples.

paragraph_text: Hosterman is an unincorporated community in Pocahontas County, West Virginia, United States. Hosterman is located on the Greenbrier River south-southwest of Durbin. The community was originally named Collins; its name was changed to Hosterman in 1902. The community presently has the name of Theodore G. Hosterman, a worker in the local lumber industry.

paragraph_text: Mound Valley is a city in Labette County, Kansas, United States. As of the 2010 census, the city population was 407.

paragraph_text: Dunmore is an unincorporated community in Pocahontas County, West Virginia, United States. Dunmore is located at the junction of West Virginia Route 28 and West Virginia Route 92 northeast of Marlinton. Dunmore has a post office with ZIP code 24934.

paragraph_text: Thorny Creek is an unincorporated community in Pocahontas County, West Virginia, United States. Thorny Creek is located on the Greenbrier River northeast of Marlinton.

Question: When did the state where Pocahontas Mounds is located become a right to work state?
Answer: 1954