169. Face of two men next to personality traits. One signed H.B.F.; the other E.E.L. Collection: Early 20th Century Engineering Lantern Slides Set: Face-Related Data Date: undated Format: Image Agent: unknown
170. Four pictures of man's face with expressions above nose and mouth. Middle is blackened. Collection: Early 20th Century Engineering Lantern Slides Set: Face-Related Data Date: undated Format: Image Agent: unknown
171. Faces of mathematical prodigies Collection: Early 20th Century Engineering Lantern Slides Set: Face-Related Data Date: undated Format: Image Agent: unknown
172. Two illustrations showing nasolabial fold Collection: Early 20th Century Engineering Lantern Slides Set: Face-Related Data Date: undated Format: Image Agent: Bohnen, Carl A., 1872-1951
173. Two drawings upper lip and corner of mouth Collection: Early 20th Century Engineering Lantern Slides Set: Face-Related Data Date: undated Format: Image Agent: unknown
174. Eight photographs of man's face with different expressions. Collection: Early 20th Century Engineering Lantern Slides Set: Face-Related Data Date: undated Format: Image Agent: unknown
175. Drawings of two boys by Carl Bohnen. Collection: Early 20th Century Engineering Lantern Slides Set: Face-Related Data Date: undated Format: Image Agent: unknown
176. Drawing of one face with labels on chin, jaw, and cheek. Collection: Early 20th Century Engineering Lantern Slides Set: Face-Related Data Date: undated Format: Image Agent: unknown
177. Two photographs of two pairs of hands, one with palms facing inward, the other palms facing outward. Collection: Early 20th Century Engineering Lantern Slides Set: Face-Related Data Date: undated Format: Image Agent: unknown
178. Six drawings of a man's nose and face. Collection: Early 20th Century Engineering Lantern Slides Set: Face-Related Data Date: undated Format: Image Agent: unknown
179. Man shown measuring digit of finger, from .72 to .75 inches. Collection: Early 20th Century Engineering Lantern Slides Date: undated Format: Image Agent: unknown
180. Mean time between failure curves compared to probability of acceptance. Collection: Early 20th Century Engineering Lantern Slides Date: undated Format: Image Agent: unknown
