Items

• [E1518IAU], Letter from Swiss Colours Co to Thomas Alva Edison, September 9th, 1915
  1915-09-09
• [E1518IBP], Letter from Swiss Colours Co to Thomas Alva Edison, September 16th, 1915
  1915-09-16
• [E1616CAT], Letter from Swiss Colours Co to National Phonograph Co (Brooklyn), March 15th, 1916
  1916-03-15