prepared from surveys by the Wisconsin Geological and Natural History Survey ; hydrography in charge of L.S. Smith ; field work by L.S. Smith and H.M. Trippe
prepared from surveys by the Wisconsin Geological and Natural History Survey E.A. Birge, PH. D. director. Hydrography in charge of L.S. Smith, C.E. Field work by L.S. Smith & H.M. Trippe
prepared from surveys made by Civil Engineering Students, University of Wisconsin, Classes 1897, 8, 9, 0 and by the Wisconsin Geological and Natural History Survey, E.A. Birge, PH. D., director ; Hydrography and cartography in charge of L.S. Smith, C.E. ..