Horse-drawn wagons in front of the Center Market, Washington, D.C. In 1909, visitors standing at the entrance of the United States National Museum (now the <a href="http://mallhistory.org/items/show/55">Museum of Natural History</a>), saw horse-drawn carriages and carts, vendors, and storefronts, of <a href="http://mallhistory.org/items/show/32">Center Market</a>. The small building in the foreground is a guard house next to the wooden gate leading to the museum. Smithsonian Institution Archives. <a href="http://siarchives.si.edu/collections/siris_sic_8219?back=%2Fsearch%2Fsia_search_collections%2Fcenter%2520market">View original</a>. 1909 <a href="/items/browse?advanced%5B0%5D%5Belement_id%5D=38&advanced%5B0%5D%5Btype%5D=is+exactly&advanced%5B0%5D%5Bterms%5D=1890-1919">1890-1919</a>