Wiener, J. G., Jackson, G. A., May, T. W., and Cole, B. P., 1984, Longitudinal distribution of trace elements (As, Cd, Cr, Hg, Pb, and Se) in fishes and sediments in the upper Mississippi River, Wiener, J. G., Anderson, R. V., and McConville, D. R., eds., Contaminants in the Upper Mississippi River: Boston, Butterworth Publishers, p. 139-170. Abstract: The present paper reports on the longitudinal distribution of As, Cd, Cr, Hg, Pb, and Se in fish (Cyprinus carpio and Lepomis macrochirus ) and bed sediments in a 500-km stretch of the Mississippi River from Sartell, MN to Guttenberg, IA. Keywords: trace-elements, sediment-pollution, bioaccumulation, USA, Upper-Mississippi-R., metals, sediments, Cyprinus-carpio, Lepomis-macrochirus, USA, Iowa, Mississippi-R., USA, Minnesota, Mississippi-R.