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Sprague, Frank J. (Frank Julian), 1857-1934
collection
Frank J. Sprague papers
11
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Sketches
Mechanical drawings
1
notes (documents)
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Manuscripts and Archives Division
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still image
11
text
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11 results found
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: Manuscripts and Archives Division
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: Sketches
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Name
: Sprague, Frank J. (Frank Julian), 1857-1934
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An automatic razor strip for …
Ink sketch of boat for canal …
Ink sketch of trolley pole
Support for overhead electric…
m
Seamanship Notes
Electric Light
Electric Motor
Sketch of an arrangement for …
Electric Railways main featur…
Control for automatic elevator
Car switch for operating pilo…
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