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Sprague, Frank J. (Frank Julian), 1857-1934
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Frank J. Sprague papers
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notes (documents)
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Manuscripts and Archives Division
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still image
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: Sprague, Frank J. (Frank Julian), 1857-1934
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Drawing of Electrical Circuits
m
Drawings of Floor Planer
Car switch for operating pilo…
Some ideas to be inserted int…
