1. Alexander , G.R. 1976 Diet of vertebrate predators on trout waters in north central Lower Michigan. Michigan Department of Natural Resources Fisheries Research Report 1839 Ann Arbor
2. Alexander , G.R. E.A. Hansen 1988 Decline and recovery of a brook trout stream following an experimental addition of sand sediment. Michigan Department of Natural Resources Fisheries Research Report 1943 Ann Arbor
3. Alexander , G.R. W.J. Buc G.T. Schnicke 1979 Trends in angling and trout populations in the Main Au Sable and North Branch Au Sable Rivers from 1959-1976. Michigan Department of Natural Resources Fisheries Research Report 1865 Ann Arbor