Astronomer and physicist (1834–1906) and the third Secretary of the Smithsonian Institute. Two TLSs, both signed “S. P. Langley,” both two pages on two adjoining sheets, Smithsonian Institute letterhead, dated 1894 and 1901, both to Otho Michaelis. The 1894 letter reads, in part: “I have been out to Cambridge, where I saw Frank. He looks very well and happy. We had a long talk, without getting quite to a financial decision, but I have told him that I think George is such a good brother, that he ought to look to his opinion, rather than to mine.” In fine condition, with uniform toning to one letter. Accompanied by one of the original mailing envelopes. RR Auction COA.
