Items

• [D7702ZCW1], Letter from Thomas Alva Edison to Samuel Pierpont Langley, October 27th, 1877
  1877-10-27
• [D8818AKE], Letter from Alfred Ord Tate to Smithsonian Institution, Samuel Pierpont Langley, May 8th, 1888
  1888-05-08
• [D9211ADT], Letter from Alfred Ord Tate to Samuel Pierpont Langley, Smithsonian Institution, September 14th, 1892
  1892-09-14
• [LB003271], Letter from Thomas Alva Edison to Samuel Pierpont Langley, June 13th, 1878
  1878-06-13
• [LB038496], Letter from Alfred Ord Tate to Smithsonian Institution, Samuel Pierpont Langley, March 22nd, 1890
  1890-03-22
• [LB056476], Letter from Alfred Ord Tate to Samuel Pierpont Langley, Smithsonian Institution, May 13th, 1892
  1892-05-13
• [X506], Letter from Thomas Alva Edison to Samuel Pierpont Langley, October 29th, 1877
  1877-10-29