49. Cartoon of horseless carriage (automobile) with head of horse in front. Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
50. Sawmill, Washington, 1900 Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Location: Washington State Date: 1900 Format: Image Agent: unknown
51. Large Tube Yarrow boiler Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: 1903 Format: Image Agent: unknown
52. Boiler Tubes from a Thornycroft Boiler, used in torpedo boats Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Location: Possibly photographed at Cavite Navy Yard, Philippine Islands Date: undated Format: Image Agent: unknown
53. Babock & Wilcox express double type furnace boiler Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Location: unknown Date: undated Format: Image Agent: unknown
54. Thornycroft boiler Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
55. Water-tube boiler Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
56. Yarrow steam boiler Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Location: unknown Date: undated Format: Image Agent: unknown
57. Yarrow steam boiler Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Location: unknown Date: undated Format: Image
58. Yarrow steam boiler Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Location: unknown Date: undated Format: Image
59. First EC-2 cargo vessel boiler by Babcock and Wilcox Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
60. View of tubes inside EC-2 vessel boiler by Babcock and Wilcox Collection: Early 20th Century Engineering Lantern Slides Set: Machinery Date: undated Format: Image Agent: unknown
