Charles Grafton Page
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Charles Grafton Page was an American electrical experimenter and inventor, physician, patent examiner, patent advocate, and professor of chemistry.
Charles Grafton Page
Side view of Page's 1837 spiral, showing connector cups spaced across its length.
Charles Grafton Page's double helix coil, as marketed in 1848 for $8.00 by Boston instrument maker Daniel Davis Jr.
Charles Grafton Page's electromagnetic locomotive.
Eben Norton Horsford
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Eben Norton Horsford was an American scientist who taught agricultural chemistry in the Lawrence Scientific School at Harvard from 1847 to 1863. Later he was known for his reformulation of baking powder, his interest in Viking settlements in North America, and the monuments he built to Leif Erikson.
Eben Norton Horsford
Rumford Baking Powder
The Horsford Cookbook, 1877
The Horsford 1887 almanac and cook book, 1887