Items
Creator is exactly
Ruhm, Herman David
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[E1108AM], Letter from Niagara Alkali Co, Herman David Ruhm to Thomas Alva Edison, April 12th, 1911 1911-04-12
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[E1108AP], Letter from Niagara Alkali Co, Herman David Ruhm to Thomas Alva Edison, April 21st, 1911 1911-04-21
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[E1108AT], Letter from Niagara Alkali Co, Herman David Ruhm to Thomas Alva Edison, May 3rd, 1911 1911-05-03
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[E1108AV], Letter from Niagara Alkali Co, Herman David Ruhm to Thomas Alva Edison, May 13th, 1911 1911-05-13
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[E1141BM], Letter from Niagara Alkali Co, Herman David Ruhm to Thomas Alva Edison, November 14th, 1911 1911-11-14
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[E1421CY], Letter from Niagara Alkali Co, Herman David Ruhm to Thomas Alva Edison, September 14th, 1914 1914-09-14
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[E1421DD], Letter from Niagara Alkali Co, Herman David Ruhm to William Henry Meadowcroft, September 22nd, 1914 1914-09-22