The Century Dictionary and Cyclopedia, in Ten Volumes, Volume I, prepared under the Superintendence of William Dwight Whitney PhD (1906)
The Century Dictionary and Cyclopedia, in Ten Volumes, Volume II, prepared under the Superintendence of William Dwight Whitney PhD (1906)
The Century Dictionary and Cyclopedia, in Ten Volumes, Volume III, prepared under the Superintendence of William Dwight Whitney PhD (1906)
The Century Dictionary and Cyclopedia, in Ten Volumes, Volume IV, prepared under the Superintendence of William Dwight Whitney PhD (1906)
The Century Dictionary and Cyclopedia, in Ten Volumes, Volume V, prepared under the Superintendence of William Dwight Whitney PhD (1906)
The Century Dictionary and Cyclopedia, in Ten Volumes, Volume VI, prepared under the Superintendence of William Dwight Whitney PhD (1906)
The Century Dictionary and Cyclopedia, in Ten Volumes, Volume VII, prepared under the Superintendence of William Dwight Whitney PhD (1906)
The Century Dictionary and Cyclopedia, in Ten Volumes, Volume VIII, prepared under the Superintendence of William Dwight Whitney PhD (1906)
The Century Dictionary and Cyclopedia, in Ten Volumes, Volume IX, prepared under the Superintendence of William Dwight Whitney PhD (1906)
The Century Dictionary and Cyclopedia, in Ten Volumes, Volume X, prepared under the Superintendence of William Dwight Whitney PhD (1906)