Question: Robert Kay worked for a museum founded when?

Context paragraphs:
Oshawa Museum: The Oshawa Museum is a historical museum founded by the Oshawa Historical Society, located in Oshawa, Ontario, Canada.  It has a dual role as a museum; exhibits for the general public, and archival storage of the city's historical documents.  Every building in the museum is designated under the Ontario Heritage Act The museum preserves and celebrates the history of Oshawa, and the surrounding area from the 15th century to the present day.

Robert Kay (librarian): Robert Kay (19 June 1825 – 23 April 1904) was one of the founders of the Library, Art Gallery and Museum in Adelaide, South Australia, and the originator of the circulating library.  At his death he was general director and secretary of the Public Library, Museum, and Art Gallery of South Australia.

Robert Kay (footballer): Robert Kay was an English professional footballer who played as a goalkeeper.  He played five games for Burnley in the first-ever season of the Football League.

Robert Kay (inventor): Robert Kay (1728–1802) was an English inventor, best known for designing a "drop box" to improve the capability of weaving looms.

Terra Museum: The Terra Museum of American Art was an art museum founded by Chicago businessman Daniel J. Terra in Evanston, Illinois in 1980.  The museum was relocated to Chicago, Illinois in 1987.  During its tenure, the museum presented more than 200 exhibitions on American art and provided related programs and events for children, teachers, families, general adult audiences, and scholars.  The museum closed on October 31, 2004 after 24 years of operation.

John Kinard: John Robert Edward Kinard (November 22, 1936 – August 5, 1989) was an American social activist, pastor, and museum director.  He is best known as the director of the Anacostia Museum, a small community museum founded by the Smithsonian Institution in 1967.  Kinard was the museum's first director, and remained in the post until his death.  The "Washington Post" said Kinard was "a passionate believer in the idea that the well-being of black people depends on having a record of their past".  Noted British archeologist and museologist Sir Kenneth Hudson said Kinard "developed the Anacostia Museum into one of the small number of museums of influence in the world."

South Australian Museum: The South Australian Museum is a natural history museum and research institution in Adelaide, South Australia, founded in 1856.  It occupies a complex of buildings on North Terrace in the cultural precinct of the Adelaide Parklands.

Marshall Kay: Marshall Kay (November 10, 1904 – September 4, 1975) was a geologist and professor at Columbia University.  He is best known for his studies of the Ordovician of New York, Newfoundland, and Nevada, but his studies were global and he published widely on the stratigraphy of the middle and upper Ordovician.  Kay's careful fieldwork provided much geological evidence for the theory of continental drift.  He was awarded the Penrose Medal in 1971.  Less well known is his work for the Manhattan project, as a geologist searching for manganese deposits.  Marshall's son Robert Kay of Cornell University and son-in-law Robert Berner of Yale University are also geology professors.  His son Richard Kay of Duke University is a biological anthropologist and vertebrate paleontologist.

R. K. Gordon: Robert Kay Gordon (1887–1973) was an English scholar of medieval and early modern English literature and administrator at the University of Alberta in Canada.

Laughlin Phillips: Laughlin Phillips (October 20, 1924 – January 24, 2010), also known as Loc Phillips, was an American museum director from Washington, D.C. The son of wealthy art collectors, he managed The Phillips Collection, a museum founded by his parents.  Under his leadership, the museum increased its collection, underwent expansion projects and received substantial financial support.  Prior to his career as a museum director, Phillips served during World War II, worked as an analyst for the Central Intelligence Agency (CIA) and co-founded a local magazine.

Supporting paragraphs: Robert Kay (librarian) South Australian Museum
Answer: 1856