6Historic Inventions (pt. 1)
27Origin of modern calculating machines (pt. 2)
7Historic Inventions (pt. 2)
28The Colored Inventor: A Record of Fifty Years
8Historic Inventions (pt. 3)
29Stories of Inventors: The Adventures of Inventors and Engineers (pt. 1)
9Historic Inventions (pt. 4)
30Stories of Inventors: The Adventures of Inventors and Engineers (pt. 2)
10Great Inventions and Discoveries (pt. 1)
31Invention and Discovery: Curious Facts and Characteristic Sketches (pt. 1)
11Great Inventions and Discoveries (pt. 2)
32Invention and Discovery: Curious Facts and Characteristic Sketches (pt. 2)
12Famous Days in the Century of Invention (pt. 1)
33The Romance of Industry and Invention (pt. 1)
13Famous Days in the Century of Invention (pt. 2)
34The Romance of Industry and Invention (pt. 2)
14American Inventions and Inventors (pt. 1)
35The Romance of Industry and Invention (pt. 3)
15American Inventions and Inventors (pt. 2)
36The Romance of Industry and Invention (pt. 4)
16American Inventions and Inventors (pt. 3)
37The Boy's Book of New Inventions (pt. 1)
17American Inventions and Inventors (pt. 4)
38The Boy's Book of New Inventions (pt. 2)
18Marvels of Scientific Invention (pt. 1)
39The Boy's Book of New Inventions (pt. 3)
19Marvels of Scientific Invention (pt. 2)
40The Boy's Book of New Inventions (pt. 4)
20Marvels of Scientific Invention (pt. 3)
41The Boy's Book of New Inventions (pt. 5)
21Marvels of Scientific Invention (pt. 4)