PARADISE FOUND, THE CRADLE OF THE HUMAN RACE AT THE NORTH POLE: A STUDY OF THE PRIMITIVE WORLD WILLIAM FAIRFIELD WARREN 1885
THE RELIGIONS OF THE WORLD AND THE WORLD–RELIGION; AN OUTLINE FOR PERSONAL AND CLASS USE WILLIAM FAIRFIELD WARREN 1911
THE UNIVERSE AS PICTURED IN MILTON’S PARADISE LOST; AN ILLUSTRATED STUDY FOR PERSONAL AND CLASS USE WILLIAM FAIRFIELD WARREN 1915