Louis Agricol BAUER (1865-1932, American geophysicist, astro - Lot 367

Louis Agricol BAUER (1865-1932, American geophysicist, astronomer and magnetician, he was the first director of the Carnegie Institution of Washington, he worked on the mapping of the earth's magnetic field) / Typed letter signed in his hand, in English, 1 p in-4, letterhead Carnegie Institution of Washington, December 6, 1912, to Commandant Meynier, whom he thanks for the help given to his collaborators in organizing their trans-Saharan work / Enclosed: autograph letter, incomplete (end missing), 1 p in-4, Carnegie Institution letterhead, Timbuktu, May 20, 1913, to the same, in French: he has just read the Commandant's account of one of his missions in the part of Africa where he is, and "recalls with pleasure our very short association in Algiers", "we had good luck in the Sahara, much of our good luck in this trip is due to the great trouble you took in giving us advice", "we arrived here on May 12", they will leave again in early June, he will go down the Niger to the coast