Second grade perspective, (theory and practice) : specially prepared for the use of art students (1893)
Dennis, H. J · London : Baillière, Tindall, and Cox · leaf 84
by III. Another prism of the same form and dimensions stands upon plan and elevation, haif size, in the ground-plane on one of its rectangular faces, its octagonal surfaces the accompanying diagram. The lying in vertical planes receding at 45° to the right. One edge of the prism touches the… … 8
Perspective
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
