Question: how many Smithsonian museums are there in the location where the person who took the U.S. off the gold standard worked?

<P0-S0> Starting in the 1959 -- 1969 administration of President Charles de Gaulle and continuing until 1970, France reduced its dollar reserves, exchanging them for gold at the official exchange rate, reducing US economic influence. <P0-S1> This, along with the fiscal strain of federal expenditures for the Vietnam War and persistent balance of payments deficits, led U.S. President Richard Nixon to end international convertibility of the U.S. dollar to gold on August 15, 1971 (the ``Nixon Shock ''). <SEP> <P1-S0> The Smithsonian museums are the most widely visible part of the United States' Smithsonian Institution and consist of nineteen museums and galleries as well as the National Zoological Park. <P1-S1> Seventeen of these collections are located in Washington D.C., with eleven of those located on the National Mall. <P1-S2> The remaining ones are in New York City and Chantilly, Virginia. <P1-S3> As of 2010, one museum, the Arts and Industries Building, is closed in preparation for a substantial renovation, and its newest museum building, the National Museum of African American History and Culture, opened in 2016. <SEP> <P2-S0> Angelo J. Lano was an American field agent for the Federal Bureau of Investigation in Washington DC, notable for his work heading the investigation of, and appearing as a witness for, the Watergate scandal surrounding President Richard M. Nixon. <P2-S1> Lano was one of a number of FBI agents who was falsely accused as a source of information for Carl Bernstein and the "Washington Post" during the investigation, which helped shift White House suspicions away from Mark Felt, who was revealed as informant Deep Throat on May 31, 2005. <SEP> <P3-S0> the flag that flew during that episode in history became a significant artifact. <P3-S1> it remained in the possession of major armistead, who was promoted to brevet lieutenant colonel, and his family for many years. <P3-S2> eben appleton, colonel armistead's grandson, inherited the flag in 1878. in 1907, he lent it to the smithsonian institution, and in 1912 it was made a formal gift. <P3-S3> today it is permanently housed in the national museum of american history, one of the smithsonian institution museums on the national mall in washington, d.c. the flag was given to the museum in 1912, and has undergone multiple restoration efforts after being originally restored by amelia fowler in 1914. <SEP> <P4-S0> the discovery of large silver deposits in the western united states in the late 19th century created a political controversy. <P4-S1> due to the large influx of silver, the value of silver in the nation's coinage dropped precipitously. <P4-S2> on one side were agrarian interests such as the united states greenback party that wanted to retain the bimetallic standard in order to inflate the dollar, which would allow farmers to more easily repay their debts. <P4-S3> on the other side were eastern banking and commercial interests, who advocated sound money and a switch to the gold standard. <P4-S4> this issue split the democratic party in 1896. it led to the famous ``cross of gold ''speech given by william jennings bryan, and may have inspired many of the themes in the wizard of oz. <P4-S5> despite the controversy, the status of silver was slowly diminished through a series of legislative changes from 1873 to 1900, when a gold standard was formally adopted. <P4-S6> the gold standard survived, with several modifications, until 1971.