Pretty arts for the employment of leisure hours : a book for ladies (1879)
Davidson, Ellis A., -1878 · London : Chapman and Hall · leaf 123
Drawing from Objects. 109 horizontal edges of the distant side are then to be added. Their position must at this stage be the result … of observation and judgment } guided by their apparent proportion to the sides which are parallel with the picture. The method of determining such sizes forms one of the earliest lessons in perspective. The positions of the lines which in the solid cube would be hidden are shown in the sketch. This…
Handicraft · Decorative arts
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.