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  2. List of U.S. state minerals, rocks, stones and gemstones

    en.wikipedia.org/wiki/List_of_U.S._state...

    In the chart below, a year which is listed within parentheses represents the year during which that mineral, rock, stone or gemstone was officially adopted as a state symbol or emblem. Table of minerals, rocks, stones and gemstones

  3. Smithsonian trinomial - Wikipedia

    en.wikipedia.org/wiki/Smithsonian_trinomial

    A Smithsonian trinomial (formally the Smithsonian Institution Trinomial System, abbreviated SITS) [1] [2] is a unique identifier assigned to archaeological sites in many states in the United States.

  4. List of national monuments of the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_national_monuments...

    Rich with Native American, early explorer, and Mormon pioneer history, this site shows Ancestral Puebloans and Kaibab Paiute Indian and pioneer life in the Old West, including the cabin where explorer John Wesley Powell's survey crew stayed in 1871. The water of Pipe Spring, discovered in 1858, made it possible for plants, animals, and people ...

  5. List of World Heritage Sites in the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_World_Heritage...

    There are 26 World Heritage Sites in the United States, with a further 17 on the tentative list. [3] The first sites in the United States added to the list were Mesa Verde National Park and Yellowstone National Park, both at the second session of the World Heritage Committee, held in Washington, D.C., in 1978. [4]

  6. List of national historic sites and historical parks of the ...

    en.wikipedia.org/wiki/List_of_national_historic...

    The theatre continues to produce live plays and has a museum of artifacts related to Lincoln, and the Petersen House, the first historic home purchased by the U.S. government, is furnished as it was the night Lincoln died. [39] Fort Bowie: Arizona: 999.45 acres (4.0446 km 2) A United States Army outpost established in 1862 by the California ...

  7. List of U.S. National Historic Landmarks by state - Wikipedia

    en.wikipedia.org/wiki/List_of_U.S._National...

    Click on a state to see a list of the National Historic Landmarks in that state. The United States National Historic Landmark Program is designed to recognize and honor the nation's cultural and historical heritage. The program was formally inaugurated with a series of listings on October 9, 1960; as of August 21, 2020, there are 2,597 ...

  8. List of burial mounds in the United States - Wikipedia

    en.wikipedia.org/wiki/List_of_burial_mounds_in...

    Several artifacts were found within a small mound with an unusual limestone crypt. Signs of habitation were discovered nearby. [6] Grave Creek Mound: Moundsville, West Virginia: 250 to 150 BCE Adena culture: At 69 feet (21 m) high and 295 feet (90 m) in diameter, the Grave Creek Mound is the largest conical type burial mound in the United States.

  9. Category:Archaeological artefact types - Wikipedia

    en.wikipedia.org/wiki/Category:Archaeological...

    An archaeological artefact is any item that has been made or modified by past human cultures. Archaeologists give names to the artefacts that they find. These names may not always reflect the true purpose of the item and are sometimes deliberately vague.