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 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. ..