49. Cincinnati centerless grinder machine Collection: Early 20th Century Engineering Lantern Slides Set: Transfer of skill Location: Cincinnati, Ohio Date: undated Format: Image Agent: unknown
50. Man using a broaching machine on milled parts, which are on display. Collection: Early 20th Century Engineering Lantern Slides Set: Transfer of skill Date: undated Format: Image Agent: unknown
51. Man in suit examining part created by a broaching machine. Collection: Early 20th Century Engineering Lantern Slides Set: Transfer of skill Date: undated Format: Image Agent: unknown
52. Multiple spindle verticle lathe Collection: Early 20th Century Engineering Lantern Slides Set: Transfer of skill Date: undated Format: Image Agent: unknown
53. Factory building steam boiler engines for ships, multiple engines and steering wheels are shown. Collection: Early 20th Century Engineering Lantern Slides Set: Transfer of skill Date: undated Format: Image Agent: unknown
54. Man standing behind milling machine which drilled holes into a valve flange. Collection: Early 20th Century Engineering Lantern Slides Set: Transfer of skill Date: undated Format: Image Agent: unknown
55. Picture of two connecting engine rods for comparison: one older and the other larger and newer. Collection: Early 20th Century Engineering Lantern Slides Set: Transfer of skill Date: undated Format: Image Agent: unknown
56. Heald No. 81 Internal Centerless Grinding Machine Collection: Early 20th Century Engineering Lantern Slides Set: Transfer of skill Date: undated Format: Image Agent: unknown
57. Stamping press machine for parts in an automobile factory Collection: Early 20th Century Engineering Lantern Slides Set: Transfer of skill Date: undated Format: Image Agent: unknown
58. Men working in a factory assembly line of roofs panels for automobiles Collection: Early 20th Century Engineering Lantern Slides Set: Transfer of skill Date: undated Format: Image Agent: unknown
59. Two men stacking parts in an automobile factory Collection: Early 20th Century Engineering Lantern Slides Set: Transfer of skill Date: undated Format: Image Agent: unknown
60. Wide view of the factory of A. O. Smith Corporation with automatic riveters and nailing machines. Collection: Early 20th Century Engineering Lantern Slides Set: Transfer of skill Location: Date: undated Format: Image Agent: unknown
