Items
Creator is exactly
Colvin, Frank R
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[D9104AAO], Letter from Electrical Engineer, Frank R Colvin to Thomas Alva Edison, June 19th, 1891 1891-06-19
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[D9104AAQ], Letter from Frank R Colvin, Electrical Engineer to Thomas Alva Edison, June 24th, 1891 1891-06-24
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[D9104AAR], Letter from Electrical Engineer, Frank R Colvin to Frank Harrison, June 24th, 1891 1891-06-24
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[D9104AAS], Letter from Frank R Colvin, Electrical Engineer to Alfred Ord Tate, July 1st, 1891 1891-07-01
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[D9104AAV], Letter from Frank R Colvin to Frank Harrison, July 1st, 1891 1891-07-01
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[D9104AAX], Letter from Electrical Engineer, Frank R Colvin to Thomas Alva Edison, August 17th, 1891 1891-08-17
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[D9104AAZ], Letter from Electrical Engineer, Frank R Colvin to Frank Harrison, August 17th, 1891 1891-08-17