This letter was written by Langley to Henry S. Mackintosh, an American teacher and author. It is on Smithsonian Institution letterhead. The letter reads as follows: "I am very glad to see your hand again, and perhaps I can best answer your inquiry by enclosing you a copy of a report from the Administrative Assistant in the National Museum, in reference to the feathered cloak. If you wish anything more done through the Museum, let me know, though I rather think you would do quite as well with private parties. Very sincerely yours, S. P. Langley."