Items

• [D7506G], Letter from Samuel Spahr Laws to Thomas Alva Edison, December 8th, 1875
  1875-12-08
• [D7506K], Letter from Samuel Spahr Laws to Thomas Alva Edison, December 13th, 1875
  1875-12-13
• [D7802ZHM], Letter from John Heyl Vincent to Thomas Alva Edison, April 12th, 1878
  1878-04-12
• [X154B4BJ], Letter from James Redpath to T C Bragg, June 13th, 1878
  1878-06-13
• [X154B4BW], Letter from James Redpath to J T Sargent, June 25th, 1878
  1878-06-25