Items

• [E1918AM], Letter from William Henry Meadowcroft to Electrical Testing Laboratories, Clayton Halsey Sharp, May 6th, 1919
  1919-05-06
• [E1922AD], Letter from William Henry Meadowcroft to Electrical Testing Laboratories, William F Little, January 16th, 1919
  1919-01-16
• [MF35AQ], Letter from William Henry Meadowcroft to Electrical Testing Laboratories, Preston Strong Millar, May 7th, 1918
  1918-05-07