51. Manual dexterity test for female worker. Arrows point to the direction where the pegs should go. Hands cross as they move the pegs. Collection: Early 20th Century Engineering Lantern Slides Set: Aptitude Tests Date: undated Format: Image Agent: unknown
52. Manual dexterity test for female worker. Arrows point to the direction where the round pieces of wood should go. Collection: Early 20th Century Engineering Lantern Slides Set: Aptitude Tests Date: undated Format: Image Agent: unknown
53. Manual dexterity test for female worker. Arrows point to the direction where the pegs should go. Collection: Early 20th Century Engineering Lantern Slides Set: Aptitude Tests Date: undated Format: Image Agent: unknown
54. Interior view of a cruising tubine Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
55. Exterior view of a cruising turbine Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
56. Re-entry turbine, showing nozzle, wheel, and reversing chamber. Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: Terry Steam
57. Exterior view of a high pressure turbine Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
58. Interior view of a high pressure turbine Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
59. Row of houses for employees of Carnegie Steel Company, East Pittsburgh, Pennsylvania Collection: Early 20th Century Engineering Lantern Slides Set: Personnel Location: East Pittsburgh, Pennsylvania Date: undated Format: Image Agent: unknown
60. The Traveling Cafeteria Collection: Early 20th Century Engineering Lantern Slides Set: Personnel Date: undated Format: Image Agent: unknown
