United States Swimming National Championships was created in 1962.
United States Spring Swimming Championships was created in 1962.
United States Dance Championships was created in 1971.
United States Olympic Trials - swimming - was created in 1920.
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National States' Rights Party was created in 1958.
National Alliance - United States - was created in 1974.
National Museum of the United States Navy was created in 1961.
National Guard Association of the United States was created in 1878.
National Theater of the United States of America was created in 2000.
National Council of Women of the United States was created in 1888.
National Socialist League - United States - was created in 1974.
United States National Maritime Day was created in 1933.