Lyon was from 1975 until his death the chairman of Ruska Instrument Corporation. He was a major stockholder and later the chairman of the board of River Oaks Bank and Trust Company in the River Oaks section of Houston. He remained bank chairman until the institution was obtained in 1991 by Compass Bancshares.<ref name=obit>"Rites Set for Developer, Banker James E. Lyon", ''Houston Chronicle'', May 2, 1993</ref> | Lyon was from 1975 until his death the chairman of Ruska Instrument Corporation. He was a major stockholder and later the chairman of the board of River Oaks Bank and Trust Company in the River Oaks section of Houston. He remained bank chairman until the institution was obtained in 1991 by Compass Bancshares.<ref name=obit>"Rites Set for Developer, Banker James E. Lyon", ''Houston Chronicle'', May 2, 1993</ref> |