Conrad Aiken Autograph Letter Signed

Wilhelm Rontgen ALS Rare and Beautiful 1p autograph letter in German signed by physicist Wilhelm Conrad Röntgen (1845-1923) as "W.C. Röntgen" at center. Written at Weilheim, Röntgen's country estat

Roentgen Wilhelm Conrad Wilhelm Röntgen, Discover of X-Rays, Recommends Graduate Student 1p autograph letter in German signed by physicist Wilhelm Conrad Röntgen (1845-1923) as "W.C. Röntgen" at ce

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

Lachlan McIntosh autograph letter signed ("Lachn. McIntosh"). One page of a bifolium, 8" x 12.5", "Fort Laurens upon Muskingum River", [Ohio&rsq

THOREAU, HENDRY DAVID. Autograph Letter Signed, "Henry D. Thoreau," to the publishers of Putnam's Monthly Dix & Edwards, acknowledging receipt of payment for an installment of "Cape Cod." 1 page, 8vo;

ALS in German, signed “A. E.,” one page, 5.5 x 8.5, no date. Handwritten letter to Mr. Reiche, possibly the German physicist Fritz Reiche, with a reference to his research assistant Peter

John Rutledge autograph letter signed ("J. Rutledge") as Governor of South Carolina. Two pages of a bifolium, 6.25" x 7.75", Congaree, [S