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Field notes, January 1898 - April 1902 : bird observations made in and around North Freedom, Wisconsin, notes of June 1901 were kept on a trip to Minnesota
Field notes, May 1902 - December 1904 : mostly bird observations made in and around North Freedom, Wisconsin, notes for November 27 - December 1, 1904 were taken at Independence, Kansas
Field notes, May 1902 - December 1904 : mostly bird observations made in and around North Freedom, Wisconsin, notes for November 27 - December 1, 1904 were taken at Independence, Kansas
Field notes, May 1902 - December 1904 : mostly bird observations made in and around North Freedom, Wisconsin, notes for November 27 - December 1, 1904 were taken at Independence, Kansas