Gwinn, Robert P.

The New Encyclopaedia Britannica : Macropaedia : Ready Reference. Vol. 2, (Bayeu-Ceanothus)

The New Encyclopaedia Britannica : Macropaedia : Ready Reference. Vol. 3, (Ceara-Deluc)

The New Encyclopaedia Britannica : Macropaedia : Ready Reference. Vol. 4, (Delusion-Frenssen)

The New Encyclopaedia Britannica : Macropaedia : Ready Reference. Vol. 5, (Freon-Holderlin)

The New Encyclopaedia Britannica : Macropaedia : Ready Reference. Vol. 6, (Holderness-Krasnoje)

The New Encyclopaedia Britannica : Propaedia-Outline of Knowledge-Guide to the Britannica