Items

• [E1421EU1], Letter from United Gas Improvement Co, William H Gartley to Thomas Alva Edison, December 8th, 1914
  1914-12-08
• [E1518DBU], Letter from United Gas Improvement Co, William H Gartley to William Henry Meadowcroft, April 8th, 1915
  1915-04-08
• [E1518DCD], Letter from William H Gartley, United Gas Improvement Co to Thomas Alva Edison, April 9th, 1915
  1915-04-09
• [E1518DCE], Letter from United Gas Improvement Co, William H Gartley to William Henry Meadowcroft, April 9th, 1915
  1915-04-09
• [E1518DGM], Letter from United Gas Improvement Co to Thomas Alva Edison, April 29th, 1915
  1915-04-29
• [E1518EAT], Letter from United Gas Improvement Co to Thomas Alva Edison, May 7th, 1915
  1915-05-07