By: Adams, Charles C. (Charles Christopher), - McCreary, Otto - Morse, Albert P. (Albert Pitts), - Peet, Max Minor, - Ruthven, Alexander Grant, - Walker, Bryant, - Wood, Norman Asa, - Michigan. Geological Survey - University of Michigan. Univers

Lansing, Mich.,Wynkoop Hallenbeck Crawford Co., State Printers,1909. |H