Items

• [SB512123A1], Article, Thomas Alva Edison, August 8th, 1915
  1915-08-08
• [Z005AX], Letter from Thomas Alva Edison to William Henry Preece, May 4th, 1878
  1878-05-04
• [Z005AY], Letter from Thomas Alva Edison to William Henry Preece, May 19th, 1878
  1878-05-19