Items

• [E1112AG], Test Report, Sam Gerrish Langley, September 29th, 1911
  1911-09-29
• [E1215AV1], Test Report, Sam Gerrish Langley, August 8th, 1912
  1912-08-08
• [E1623AC], Letter from Sam Gerrish Langley to John Pierrepont Constable, March 28th, 1916
  1916-03-28
• [MF33AT2], Technical Note, Sam Gerrish Langley, March 6th, 1918
  1918-03-06
• [PT5047A], Technical Note, Sam Gerrish Langley, December 27th, 1911
  1911-12-27
• [PT5054], Patent Application, Sam Gerrish Langley, June 14th, 1912
  1912-06-14
• [PT5054A], Technical Note, Sam Gerrish Langley, April 24th, 1912
  1912-04-24
• [PT5054B], Technical Note, Sam Gerrish Langley, April 1912
  1912-04-00
• [PT5054C], Technical Note, Sam Gerrish Langley, May 6th, 1912
  1912-05-06
• [PT5054D], Technical Note, Sam Gerrish Langley, June 6th, 1912
  1912-06-06