Dennis C. Johnson was a native of Minnesota. He earned the B.A. degree in chemistry (1963) from Bethel College, Minnesota, and the Ph.D. degree in analytical chemistry (1967) from the University of Minnesota in Minneapolis. He joined the chemistry staff at ISU in 1968. At ISU, Professor Johnson received the Wilkinson Award in Chemistry Teaching (1972, 1983), a LAS College Award in Teaching (1989), the M.E. White Graduate Advising Award (1996). Distinguished Professor Award (1999) and Alumni Faculty Citation (1999). He also received the Ion Chromatography Award from the International Ion Chromatography Conference (1988), the Iowa Governor's Science Medal for Science Application (1991), the Palmer Award in Chromatography from the Minnesota Chromatography Forum (1993), the C.N. Reilley Award from the Society for Electroanalytical Chemistry (1997), the Alumnus-of-the-Year Award at Bethel College (1994), and he was elected as a Fellow of the Electrochemical Society. He has been a member of the editorial advisory boards of the journals Analytical Chimica Acta, Electroanalysis, Analytical Chemistry (1992-95), and Journal of Solid-State Electrochemistry. Dr. Johnson retired in May 2002.