Louisa Keyser, or Dat So La Lee (ca. 1829 - December 6, 1925) was a celebrated Native American basket weaver. A member of the Washoe people in northwestern Nevada, her basketry came to national prominence during the Arts and Crafts movement and the "basket craze" of the early 20th century. Many museums of art and anthropology preserve and display her baskets, such as the Penn Museum in Philadelphia, the Smithsonian National Museum of the American Indian in Washington, D.C., the Nevada State Museum in Carson City, and the Metropolitan Museum of Art in New York. Meaning of name Dat So La Lee was a nom d'art. There are several theories about the derivation of this name. One theory is that Dat So La Lee comes from the Washoe phrase Dats'ai-lo-lee meaning "Big Hips". Another, is that the name came from an employer with whom she worked. Her art dealers, the Cohns, described her birth name as being Dabuda, meaning "Young Willow". Documentation Dat So La Lee met her future art dealers Amy and Abram Cohn around 1895. She was most likely hired by the couple as a laundress. They recognized the quality of Dat So La Lee's weaving and, wanting to enter the curio trade in Native American art, decided to promote and sell her basketry. Abram "Abe" Cohn owned the Emporium Company, a men's clothing store, in Carson City, Nevada. The couple began to document every basket she produced from 1895–1925. This expanded to include about 120 baskets that are documented. Most if not all of these documented baskets were sold at Cohn's Emporium, while the Cohns provided Keyser with food, lodging, and healthcare. The supreme craftsmanship of these baskets certainly added to the value, but the Cohns' early documentation promoted her artwork. Scholars have discovered that almost everything the Cohns wrote about Keyser was an exaggeration or fabrication. In 1945 the State of Nevada purchased 20 Dat So La Lee baskets. Ten were placed in the collection of the Nevada Historical Society (NHS) in Reno, Nevada and ten went to the Nevada State Museum in Carson City. With the collection came the ledgers documenting the baskets. In 1979 four of the baskets were stolen from the NHS but by 1999 all had been recovered and all ten were placed on permanent display. Four of the baskets were loaned to the Nevada Museum of Art for the exhibit "Tahoe,