The perceptual factors in reading; a quantitative study of the psychological processes involved in work perception.

Columbia contributions to philosophy and psychology, vol. XVII, no. l.

Electrotyping and stereotyping, a primer of information about the processes of electrotyping and stereotyping.

"Supplementary reading": p. 74.

Reproductive processes of the graphic arts; a brief description of relief, intaglio, and planographic printing processes,

"Supplementary reading": p. 69.