1. Machine which drills holes into aircraft engine crankcases. Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: Pratt & Whitney Aircraft
2. Man (machinist) operating a drilling machine. Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
3. Two Cincinnati super-service upright drills Collection: Early 20th Century Engineering Lantern Slides Set: Transfer of skill Location: Cincinnati, Ohio Date: undated Format: Image Agent: unknown
4. W. C. Lipe Company horizontal duplex drill machine Collection: Early 20th Century Engineering Lantern Slides Set: Transfer of skill Date: undated Format: Image Agent: unknown
