Items

• [D9004ACP], Letter from Solid Ingot Co, William Russell Hinsdale to Thomas Alva Edison, June 10th, 1890
  1890-06-10
• [D9004ACT], Letter from William Russell Hinsdale, Solid Ingot Co to Thomas Alva Edison, June 21st, 1890
  1890-06-21
• [E1485AK], Letter from William Russell Hinsdale to Thomas Alva Edison, September 1st, 1914
  1914-09-01
• [E1922DQ], Letter from William Russell Hinsdale to William Henry Meadowcroft, November 25th, 1919
  1919-11-25