Qb 
 
 
 
                         THE CENTURY CO. 
                         853 FOURTH AVENUE 
                           NEW YORK 
 
 
                             February 18, 1930 
 
 
           W. Aldo Leopold 
           421 Chemistry Bldg. 
           Madison, Wisconsin 
           Dear Sir: 
                    We are sorry to report in answer 
           to your letter of February 13th that we 
           cannot quote you on DI(1Lr as this book 
           is not one   ourpublications and we do 
         ..u t know by whom it is issued. 
 
TVery truly yours,, 
 
 
                                TECMTUIY Co. 
 
 
R: ES