37. Vertical sectional view inside of battleship showing steam generators Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
38. Radiator with 3 labels - stud tube prior to covering with chrome ore, chrome ore covering stud tubes, and fire brick. Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
39. Shield (gun housing, barbette) for guns used on battleship. Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
40. Worker using mallet to pack ore around studded tubing before melting down Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
41. Ore packed around studded tubing before melting down Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
42. Two photographs of two tests given to employees relating to speed and dexterity. Collection: Early 20th Century Engineering Lantern Slides Set: Merit Rating Date: undated Format: Image Agent: unknown
43. Photograph of Henry Woodruff Collection: Early 20th Century Engineering Lantern Slides Date: undated Format: Image Agent: unknown
44. Photograph of Maxim Gorky Collection: Early 20th Century Engineering Lantern Slides Date: undated Format: Image Agent: unknown
45. Manual dexterity test for female worker. Arrows point to the direction where the pegs should go. It appears the round pieces of wood are flipped from a dark side to a light side. Collection: Early 20th Century Engineering Lantern Slides Set: Aptitude Tests Date: undated Format: Image Agent: unknown
46. Manual dexterity test for female worker. Arrows point to the direction where the pegs should go. It appears the round pieces of wood are flipped from a dark side to a light side. Collection: Early 20th Century Engineering Lantern Slides Set: Aptitude Tests Date: undated Format: Image Agent: unknown
47. Manual dexterity test for female worker. Arrows point to the direction where the pegs should go. The pegs and washers are removed, with the washers stacked on a pole. Collection: Early 20th Century Engineering Lantern Slides Set: Aptitude Tests Date: undated Format: Image Agent: unknown
48. Manual dexterity test for female worker. Arrows point to the direction of movement. The washers are removed and reattached to the pegs. Collection: Early 20th Century Engineering Lantern Slides Set: Aptitude Tests Date: undated Format: Image Agent: unknown
