(English) Autograph Letter Signed [to Henry Denny]. Down, Kent, June 1, 
VERY EARLY DARWIN INVESTIGATION OF THE RACES OF MAN. In 1834 Darwin heard that head lice vary among the races of man while on the voyage of the Beagle. In his Beagle zoological diary he wrote, “Mr Martial, a surgeon of an English Whaler assures me that the Lice of the Sandwich Islanders … if they strayed to the bodies of the English in 3 or 4 days died … If these facts were verified their interest would be great.— Man springing from one stock according his varieties having different species of parasites.— It leads one into many reflections.” Intrigued by the implications of this observation, Darwin began collecting specimens for further research.
(English) Scientific manuscript of a course of studies at Collège de la Trinité, Lyon. Lyon, 1660s
This fascinating 17th-century scientific manuscript documents the state of scientific knowledge and education in France in the years following Galileo’s trial and the Church’s prohibition of Copernican theory.
CLEMENS, SAMUEL (MARK TWAIN.)
(English) Collection of 13 photographs of Samuel Clemens, his family, and Missouri relations, two bearing inscriptions by Clemens. Various places, c. 1870s
This wonderful group of Clemens family photographs includes two portraits sent to his relatives in Missouri while the author was on a lecture tour in England.
(South.) Lalouette, Antoine Prudence (1777-1855)
(English) An important manuscript collection including 16 long, closely written letters written from Alabama. Alabama, New Orleans, Paris, and elsewhere, mainly 1821-1823
This tremendous manuscript collection documents in great detail a pioneering French settler’s ambitious struggles to establish a home in the new state of Alabama in the early 1820s.
Neil Armstrong on the Cancellation of the Moon Stamp On Board the Apollo XI CSM Returning From the MoonARMSTRONG ,NEIL
(English) Typed letter signed to Dr. Joseph F. Rorke.. Houston, NASA, 15 January 1970.
In this historic letter Armstrong details the history of the Apollo XI in-flight cancellation of the “First Man on the Moon” stamp and of the die famously carried to the moon by Armstrong, Aldrin, and Collins
“I believe the high value of well-bred males is due to their transmitting their good qualities to a far greater number of offspring than can the female.”DARWIN, CHARLES
(English) Autograph Letter Signed to Lawson Tait. Down, 17 January 
CHARLES DARWIN ON SEXUALITY AND THE TRANSMISSION OF HEREDITARY CHARACTERISTICS.
(VALLEY FORGE.) FISH, NICHOLAS, Major
(English) Autograph letter signed with initials to Lt. Col. Richard Varick. Camp Valley Forge, 9 May 1778
In this splendid Valley Forge letter Major Fish here describes the soldiers’ reaction to the news of the alliance with France, detailing the day’s events celebrating the glorious news of what would prove to be one of the war’s decisive events
(English) The Life of Franklin Pierce. Boston: Ticknor, Reed and Fields, 1852
FIRST EDITION. AN ASSOCIATION COPY OF THE GREATEST INTEREST, inscribed and signed by the subject of the book, President-elect Franklin Pierce, lifelong friend of the author. Pierce has inscribed the book to the Ohio newspaper publisher Washington McLean: “For Washington McLean from Frank. Pierce Concord N.H. Feby. 5. 1853.”
EMERSON ,RALPH WALDO
(English) Autograph Letter Signed to Abby Dwight Woodbridge.. Concord, 6 July 1841
In this tremendous letter on his philosophy of the individual and on writing poetry, Emerson describes for a prospective contributor the workings of his fabled literary magazine, The Dial.
(English) Memoranda During the War. Camden, New Jersey [for Whitman], 1875-’76
FIRST EDITION. Presentation copy inscribed by Whitman on the “Remembrance Copy” leaf: “Miss E. N. Morris [from] Walt Whitman.” This copy is also noteworthy for Whitman’s handwritten correction in the account of the assassination of Abraham Lincoln at Ford’s Theatre (p. 47).