Items

• [D0406AAE], Letter from Frank A Hall, Yellowstone Park Telephone and Telegraph Co to Thomas Alva Edison, January 22nd, 1904
  1904-01-22
• [D0406ABH], Letter from Yellowstone Park Telephone and Telegraph Co, Frank A Hall to Thomas Alva Edison, June 1st, 1904
  1904-06-01
• [D0406ABQ], Legal Testimony, Frank A Hall, December 1st, 1904
  1904-12-01