Max Planck Autograph Letter Signed on Ether and

BEERBOHM, MAX Autograph letter signed ("Max"), incorporating a drawing, dated July 15, 1909. On a folded sheet of notepaper, page size 7 x 4 1/2 inches (17.5 x 11.25 cm), with Beerbohm's 49, Upper Ber

FREUD, SIGMUND. 1856-1939. Autograph Letter Signed ("Freud") to Dr. Max Levy-Suhl commenting on the growing interest in psychoanalyses 1 p. (223 x 142 mm) in German, on "Wien, IX, Bergstrasse 10" lett

Einstein on Unified Field Theory, Space, Matter, and Motion - A Superb Letter Signed in Full EINSTEIN, ALBERT.  Autograph Letter Signed, "A. Einstein", in German, on a Typed Letter Signed, "Max F

Marcel Proust ALS Mentioning French Newspaper "Le Figaro" Marcel Proust autograph letter signed, written in the summer of 1910 to Max Daireaux, whom he had met two years earlier in Cabourg, France; Ca

CHURCHILL, WINSTON SPENCER, SIR. 1874-1965. Letter Signed ('Winston S. C.'), with autograph postscript, Chartwell Manor, Westerham, Kent, September 20, 1927, 2pp., to Max Aitken, Lord Beaverbrook, fol

Hardbound book, "The Universe of Peter Max," signed and inscribed inside in black felt tip ink by Peter Max. Dust jacket included. In very good condition. Comes with a full Letter of Authenticity from

Rare ALS signed “Edgar A. Poe,” one page, 7.75 x 9.75, August 24, 1846. Addressed from New York, a handwritten letter to writer Frederick William Thomas, who, from 1841 until 1850, worked

ALS signed “N. Tesla,” four pages on two adjoining sheets, 5.25 x 6.75, personal monogram letterhead, June 14, 1899. Handwritten letter to Rear Admiral Francis J. Higginson by Nikola Tesla

CROCKETT, DAVID. 1786-1836. Autograph Letter Signed ('David Crockett') to James Davison on the heels of his failed 1831 Senate bid, including much commentary on his political philosophy and his disput

Johann Kalb autograph letter signed ("Baron de Kalb"). Two pages on one leaf, 6.5" x 8.5", Anderson's Ferry, [Pennsylvania]; September

ALS as president, signed “Go: Washington,” one page, 6.75 x 8.5, April 8, 1791. Handwritten letter to his nephew George Augustine Washington, penned from Dumfries, Virginia, during his pre

MARION, FRANCIS. 1732-1795. Early Autograph Letter Signed ('Fran. Marion') from the Swamp Fox to General Benjamin Lincoln, from the field, 1 p, 4to (318 x 254 mm), ink on paper, 'Camp at Sheldon' [Sou

Thaddeus Kościuszko autograph letter signed ("Thad: Kosciusko Colo."). One page, 7.75" x 6.25", Fishkill [New York]; Dec

Richard Montgomery autograph letter signed ("R Montgomery"). One page of a bifolium, 7.25" x 9", New York; "Saturday" [circa June 1775]. Add

German mathematician (1845-1918) who created set theory, which has become a fundamental theory in mathematics. Cantor established the importance of one-to-one correspondence between the members of two

Benedict Arnold autograph letter signed ("B. Arnold"). One page of a bifolium, 6.5" x 8.25", Philadelphia; June 8, 1777. Addressed b

LEIBNIZ (GOTTFRIED WILHELM) Autograph letter signed ('Leibniz') to Thomas Burnett ('Monsieur'), in French, thanking him for '...the news you send me of the state of literature as well as of the politi

British archaeologist and Egyptologist (1874-1939) whose discovery of the tomb of Tutankhamun in Egypt's 'Valley of the Kings' proved to be one of the signal events in the history of archa

WASHINGTON CREATES THE SECRET SERVICE. WASHINGTON, GEORGE. 1732-1799. Autograph Letter Signed ('Go Washington') to Captain Caleb Gibbs requesting outfitting during the creation of his Life Guard, 2 pp

OSCAR WILDE (1854-1900) Autograph Letter Signed, to "Dear Mrs. Beringer," offering her daughter a minor role in Lady Windermere's Fan in the event of a vacancy, and considering allowing the Haymarket

Benjamin Rush autograph letter signed ("Benjn. Rush"). Three pages of a bifolium, 7.75" x 13.25", Philadelphia, [Pennsylvania];

Charles Armand autograph letter signed ("C Armand: Mqs. de la Rouarie"). One page, 7" x 9.25", Philadelphia; March 27, 1783. To &lbra

John Adams autograph letter signed ("John Adams"). One page of a bifolium, 6.25" x 7.75", Amsterdam; January 18, 1781. Addressed to "M&peri

William Smallwood autograph letter signed ("W Smallwood"). One page, 8.25" x 13.25", "James Mechlans [Machlin's] Tavern", [Pennsylva