<Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (December 2009) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This article needs additional citations for verification . Please help improve this article by adding citations to reliable sources . Unsourced material may be challenged and removed . (December 2009) (Learn how and when to remove this template message) </Td> </Tr> <P> Daniel B. "Dan" Ryan Jr. (1894--April 8, 1961) was a Chicago insurance broker and served as President of the Cook County Board of Commissioners from 1954 to his death . Ryan was a Democrat. (1) The Dan Ryan Expressway was named in his memory . </P> <P> Ryan attended De La Salle Institute and Kent College of Law . When his father, Dan Ryan Sr., died in 1923, Ryan was elected to fill out his term on the Cook County Board of Commissioners . With the exception of 1926--1930, he sat on the board until his death and served as the board president for the final years of his life . </P>

Who is the dan ryan expressway named after