Items

• [D7702ZDL], Letter from Samuel Pierpont Langley to Thomas Alva Edison, December 3rd, 1877
  1877-12-03
• [D7802ZOE], Letter from Samuel Pierpont Langley to Thomas Alva Edison, June 7th, 1878
  1878-06-07
• [D7802ZOO], Letter from Samuel Pierpont Langley to Thomas Alva Edison, June 11th, 1878
  1878-06-11
• [D7802ZPR], Letter from Samuel Pierpont Langley to Thomas Alva Edison, June 22nd, 1878
  1878-06-22
• [D7802ZRI], Telegram from Samuel Pierpont Langley to Thomas Alva Edison, July 5th, 1878
  1878-07-05
• [D7935E], Letter from Samuel Pierpont Langley to Thomas Alva Edison, October 11th, 1879
  1879-10-11
• [D8805ACC], Letter from Smithsonian Institution, Samuel Pierpont Langley to Thomas Alva Edison, April 13th, 1888
  1888-04-13
• [D9004ABJ], Letter from Samuel Pierpont Langley, Smithsonian Institution to Thomas Alva Edison, March 3rd, 1890
  1890-03-03
• [D9004ABU], Letter from Smithsonian Institution, Samuel Pierpont Langley to Alfred Ord Tate, April 1st, 1890
  1890-04-01
• [D9202ABJ], Letter from Smithsonian Institution, Samuel Pierpont Langley to Thomas Alva Edison, June 16th, 1892
  1892-06-16